Abstract. Introduction. RBMOnline - Vol 9. No Reproductive BioMedicine Online; on web 26 May 2004
|
|
- Emmeline Riley
- 5 years ago
- Views:
Transcription
1 RBMOnline - Vol 9. No Reproductive BioMedicine Online; on web 26 May 2004 Article Cytoplasmic dysmorphisms in metaphase II chimpanzee oocytes Dr Kimie Suzuki graduated from the Nippon Dental School, Tokyo, Japan in 1994, and received a PhD degree from the University of Tokyo in After post-doctoral study in the molecular biology field in Japan and the USA, she joined the chimpanzee stem cell project at Sanwa Kagaku Kenkyusho Co. Ltd, Kumamoto, Japan. Dr Kimie Suzuki Kimie Suzuki 1,3, Nobuhiko Yoshimoto 1, Kohji Shimoda 1, Wataru Sakamoto 2, Yukie Ide 2, Takehito Kaneko 2, Tatsuyuki Nakashima 2, Ikuo Hayasaka 1, Naomi Nakagata 2 1 Kumamoto Primates Research Park, Sanwa Kagaku Kenkyusho Co., Ltd, 990 Nishikuroiwa, Ohtao, Misumi-Cho, Uto-Gun, Kumamoto , Japan 2 Division of Reproductive Engineering, Centre for Animal Resources and Development, Kumamoto University, Honjo, Kumamoto , Japan 3 Correspondence: Fax: ; ki_suzuki@skk-net.com Abstract Prior to fertilization by intracytoplasmic sperm injection (ICSI), cytoplasmic organization was evaluated in metaphase II chimpanzee oocytes obtained from stimulated ovaries. The findings demonstrate a high frequency of anomalies that are remarkably similar to the types of cytoplasmic dysmorphisms reported for human oocytes used in IVF. Similar to the human, the occurrence of these anomalies was oocyte- and animal-specific and associated with reduced competence as indicated by embryo development in vitro to the blastocyst stage. Keywords: chimpanzee oocytes, cytoplasmic dysmorphisms, in-vitro development 54 Introduction It is has long been known that the developmental potential of each mature human oocyte aspirated from a stimulated follicle for IVF is unique (Edwards, 1986). At present, oocyte morphology is one of the primary means by which competence is assessed using specific cellular or cytoplasmic characteristics suggested to be associated with developmental viability. Although controversial, an intact first polar body, the absence of cellular debris in the perivitelline space and a cytoplasm of uniform texture have been suggested to be positive indicators of competence (De Sutter et al., 1996; Xia, 1997; Balaban et al., 1998; Kahraman et al., 2000). However, a variable proportion of oocytes from the same cohort often have distinct cytoplasmic anomalies associated that have been related to reduced embryo competence either during the pre- or post-implantation stages (Alikani et al., 1995; Serhal et al., 1997; Kahraman et al., 2000; Meriano et al., 2001; Mikkelsen and Lindenberg, 2001). Van Blerkom and Henry (1992) identified several common oocyte defects in mature human metaphase II (MII) oocytes that they termed cytoplasmic dysmorphisms and noted the frequency of each dysmorphism was animal-specific, and the severity of each defect was oocyte-specific, and effects on embryo development in vitro were dysmorphism-specific. More recently, Meriano et al. (2001) suggested that for certain infertile patients, some of these dysmorphisms occurred repeatedly in successive IVF cycles and were associated with repeated poor outcomes after embryo transfer. As a species, the chimpanzee is very close to the human in many respects, including a well-established genetic homology (Gibbono, 1998). The authors work with the chimpanzee has centred on their preservation as an endangered species and the use of their embryos for experimental purposes, including the production of stem cell lines. For the generation of chimpanzee embryos by IVF, the same endocrine protocols and embryo culture and transfer methods developed for clinical IVF are used. This study reports that oocytes obtained for IVF from animals of proven fertility have many of the same types of cytoplasmic dysmorphisms as those observed in their human counterparts. These findings are a further indication of species similarity and suggest that the adverse effects of cytoplasmic dysmorphism on oocyte and embryo competence may have common aetiologies in both species.
2 Materials and methods Ovarian stimulation, oocyte retrieval, fertilization, and embryo culture Five chimpanzees (Pan troglodytes, ages 12, 14 (n = 2), 20 and 32 years) with regular menstrual cycles were stimulated only once each in this study. Ovarian stimulation used the short protocol of gonadotrophin releasing hormone agonist (GnRHa) and human menopausal gonadotrophin (HMG) human chorionic gonadotrophin (HCG), with all surgical procedures performed under anaesthesia (ketamine, 5 10 mg/kg body weight, Ketaral, Sankyo Co., Tokyo, Japan). Animals were given a single subcutaneous injection of GnRHa (3.75 mg of leuprolide acetate, Leupron, Takeda Ltd, Osaka, Japan) within 3 days after the start of menstruation. Intramuscular injections of HMG IU (Humegon; NV Organon, Oss, Netherlands) were administered daily beginning on the day following GnRHa administration. Follicle growth was monitored by transvaginal ultrasonography (Sonovista MSC, Mochida Pharm. Co., Tokyo, Japan) every two days in the week preceding ovulation induction with HCG (10,000 IU, Pregnyl; Organon), which occurred when follicles measured over 17 mm (17 18 days after GnRHa administration. Oocytes were aspirated at 31 h following HCG administration, under transvaginal ultrasound guidance, and with a standard human follicle aspiration needle (Cook, Ob/Gyn, Queensland, Australia). Prior to intracytoplasmic sperm injection (ICSI), intact, cumulus-enclosed oocytes were incubated for 2 h at 37 C in fertilization medium (Quinn s Advantage Fertilization Medium, Cooper Surgical, Trumbull, CT, USA), and after removal of cumulus and coronal cells with hyaluronidase and repeated passage through narrow bore glass micropipettes in preparation for ICSI, MII oocytes were identified and inspected by light microscopy. ICSI followed standard protocols used in human IVF, with alignment of the oocyte on the holding pipette such that the polar body was in the 12 or 6 o clock position. The first determination of fertilization occurred at h with pronuclear embryos transferred to new medium (Quinn s Advantage Cleavage Medium) supplemented with 10% serum protein substitute (SPS, Cooper Surgical). Oocyte and embryo cultures used 50 μl droplets under oil in an atmosphere of 5% CO 2, 5% O 2, 90% N 2. Cleavage stage embryos were transferred, between days 2.5 and 3.0 of culture, to blastocyst growth medium (Quinn s Advantage Blastocyst Medium, Cooper Surgical) containing 10% SPS. Morphological evaluations of MII oocytes Morphological evaluations of chimpanzee oocytes were performed at 200 magnification on an inverted light microscope equipped with Hoffman modulation optics. Each oocyte was imaged prior to insemination and tracked separately after ICSI with digital images taken from fertilization to day 5 in those instances where development had not arrested. The identification of cytoplasmic anomalies followed the same classification scheme(s) described for the human oocyte (Van Blerkom and Henry, 1992; Serhal et al., 1997; Meriano et al., 2001) and include the following: (i) extensive vesiculation; (ii) organelle/vesicle clustering; (iii) a well-defined clearing of portions of cortical cytoplasm; (iv) small dense or dark inclusion; (v) a large disc-like structure(s) usually located in central potion of cytoplasm and known to be an abnormal accumulation of smooth endoplasmic reticulum and (vi) relatively large clear vacuoles. The experimental procedures were approved by the Animal Ethical Committee of Kumamoto Primates Research Park, Sanwa Kagaku Kenkyusho Co. Ltd., Kumamoto, Japan. Results Forty-eight oocytes were retrieved from five animals of which the following 46 were classified as MII owing to the presence of a distinct first polar body (Table 1): (i) two, chimpanzees aged 14 years (n = 18); and further individual chimpazees aged (ii) 20 years (n = 4); (iii) 32 years (n = 16) and (iv) 12 years (n = 8). Of these MII oocytes, 74% (34/46) fertilized after ICSI, as demonstrated by the presence of two pronuclei at h. Prior to ICSI, 46 oocytes were examined in detail by light microscopy. Five oocytes with a clear cytoplasm of uniform texture were obtained from four chimpanzees and were classified as normal (Figure 1A). All normal-appearing oocytes fertilized, and three of the five developed to the expanded blastocyst stage after 5 days of culture (Figure 1B). For 41 oocytes subjected to ICSI, cytoplasmic anomalies were observed that were very similar to those seen in the human in relation to phenotype, frequency, oocyte-specificity and ability of the fertilized egg to develop to the expanding blastocyst stage (Table 1). Unless noted, anomalous oocytes were observed in different animals. Twenty-seven per cent (11/41) of the anomalous MII oocytes showed a clustered phenotype considered in the human to be the result of organelle aggregation (asterisk, Figure 1C). The severity of this phenotype ranged from slight to severe with the oocyte shown in this figure classified as moderate. Thirty-six per cent (4/11) of oocytes with slight-to-moderate clustering developed to the blastocyst stage at day 5 (Figure 1D). A single large disc-like inclusion (asterisk, Figure 1E), often delineated by a distinct membrane-like enclosure, occurred in 12% (5/41) of the MII oocytes observed in this study. Forty per cent (2/5) of these oocytes developed to the blastocyst stage, including the one shown in Figure 1F, which was derived from the oocyte, shown in Figure 1E. Ten per cent (4/41) of the MII oocytes appeared highly vesiculated (Figure 1G) and all were obtained from a single female (age 14 years). A similar situation existed for all seven oocytes derived from another female (age 32 years, 17%, 7/41) which showed regions of small dense lipid body accumulations (arrows, Figure 1H) that in some oocytes (asterisk, Figure 1I), seemed to be associated with what has been described in the human as necrotic foci (arrow, Figure 1I). None of the fertilized vesiculated oocytes developed to the blastocyst stage. Only one of the seven oocytes with focal lipid accumulations or presumed necrotic inclusions had developed to the blastocyst stage on day 5 (the blastocyst shown in Figure 1J was derived from the oocyte shown in Figure 1I). Fluid-filled vacuoles of different shapes and size (V1,V2, Figure 1K) were detected in two oocytes (5%, 2/41) and both occurred in the same cohort aspirated from the oldest female (age 32 years) used in this study. One oocyte with an inclusion slightly smaller than the one designated V2 in Figure 1K developed to the blastocyst 55
3 56 Figure 1. Light microscopic images of normal (A) and anomalous (C, G I, K, L) MII chimpanzee oocytes and for some, the corresponding blastocyst (B, D, F and J) that developed on day 5 of culture. Anomalous cytoplasmic phenotypes included clustering (C), a clear disc-like inclusion (E), extensive vesiculation (G), aggregates of dense lipid-like bodies and necrotic foci (H, I), vacuolation (K) and cortical cytoplasmic transparency (L). As discussed in the text, these cytoplasmic anomalies are remarkably similar to cytoplasmic defects and dysmorphisms described for human oocytes obtained from stimulated ovaries.
4 Table 1. Classification of cytoplasmic anomalies in MII oocytes from five chimpanzees according to morphological evaluation. Dysmorphism type Normal Number Blastocysts Dysmorphism type 1: vesiculated; 2: clustering; 3: well-defined cortical clearing; 4: small, dense lipid body accumulations; 5: large disc-like structure; 6: fluid-filled vacuoles. stage (Table 1). Twenty-nine per cent (12/41) of the anomalous oocytes showed areas of translucent cortical cytoplasm that varied in size and appeared devoid of organelles (asterisks, Figure 1L). Nine of these oocytes were retrieved from one female (age 14 years). Of these 12 oocytes, 10 fertilized, two were unfertilized and one developed to the blastocyst stage. This oocyte showed only slight cortical clearing similar in area to the region indicated by the left asterisk in Figure 1L. Discussion While ovarian stimulation and IVF have been used for the nonhuman primate for over 20 years (Gould, 1983; Ozasa and Gould, 1987; Hewitson et al., 1998; Hewitson and Schatten, 2002; Marshall et al., 2003;), the authors are unaware of any notation or detailed description of anomalies in the cytoplasmic organization of MII oocytes. To the best of their knowledge, the only report of IVF in the chimpanzee was the study of Gould (1983), but no mention of oocyte cytoplasmic appearance was included as cumulus cells were not removed before insemination. The present study reports that a very high frequency of MII chimpanzee oocytes aspirated from ovaries stimulated with one of the same hormonal regimens used in clinical IVF exhibit cytoplasmic anomalies that appear similar, if not identical to, cytoplasmic dysmorphisms reported for the human (Van Blerkom and Henry, 1992; Meriano et al., 2001). The finding that the frequency and severity of these dysmorphisms was animal- and oocyte-specific also coincides with clinical findings (Van Blerkom and Henry, 1992; Van Blerkom, 1994; Mikkelsen and Lindenberg, 2001; Meriano et al., 2001). Fertilization rates with dysmorphic chimpanzee oocytes were very similar to those reported with ICSI for human oocytes exhibiting the same apparent cytoplasmic phenotypes (De Sutter et al., 1996; Xia, 1997; Balaban et al., 1998; Kahraman et al., 2000). In clinical IVF, embryos derived from oocytes with severe cytoplasmic clustering, aberrant smooth endoplasmic reticulum (SER) accumulations, and extensive vesiculation or vacuolation show reduced capacity to develop to the blastocyst stage, and high frequencies of posttransfer/implantation demise (Alikani et al., 1995; Serhal et al., 1997; Kahraman et al., 2000; Meriano et al., 2001). Although the number of available chimpanzee oocytes was relatively small, the results indicate comparable rates of fertilization in normal and dysmorphic oocytes but a marked reduction in the ability of embryos to develop to the blastocyst stage when derived from oocytes with certain dysmorphisms. The blastocysts described in this paper were used to establish stem cell lines, however none developed into viable colonies (data not shown). Designations of particular cytoplasmic anomalies or dysmorphisms in human oocytes are subjective and can lead to different conclusions as to their frequency or effect on competence. However, there appears to be a consensus in the clinical IVF literature (see Meriano et al., 2001) that certain dysmorphisms do adversely affect competence after the blastocyst stage, and their occurrence and apparent negative influence on early chimpanzee embryogenesis may be a further demonstration of the similarity between the two species. The present report is thought to be the first to describe dysmorphic cytoplasmic phenotypes in the MII chimpanzee oocytes that closely resemble those found in their nearest cousin, the human. While it is tempting to speculate that dysmorphisms in human and chimpanzee oocytes have common aetiologies, this notion must take into account the fact that their origins in the human are unknown. Morphological similarity of a specific defect viewed by light microscopy does not necessarily demonstrate actual structural or subcellular equivalence between species. Electron microscopy has been used with human oocytes to examine the cellular and subcellular characteristics of the types of defects described here (Van Blerkom, 1990, 1994) and equivalence for the chimpanzee may require similar studies. Although findings indicate that extremely low rates of normal-appearing oocytes occur in both young and old chimpanzees (14, 20 and 32 years old), the number of animals and oocytes obtained is too few to conclude that age and oocyte quality are related in the chimpanzee as they appear to be in the human. The apparent commonality of response to hyperstimulation at the oocyte level may reflect the similar reproductive physiologies of the two species, including the fact that both species have menstrual cycles and maintain reproductive ability for decades. However, the findings also suggest that the human-based ovarian stimulation protocol used here may need to be optimized for the chimpanzee, or that other protocols need to be evaluated in the chimpanzee in order to obtain sufficient numbers of normal blastocysts for stem cell generation. Acknowledgments The authors thank Miwako Takeichi for her assistance in this study. 57
5 References Alikani MP, Palermo G, Adler A et al Intracytoplasmic sperm injection in dysmorphic human oocytes. Zygote 3, Balaban B, Urman B, Sertac A et al Oocyte morphology does not affect fertilization rate, embryo quality and implantation rate after intracytoplasmic sperm injection. Human Reproduction 13, De Sutter P, Dozortsev D, Qian C et al Oocyte morphology does not correlate with fertilization rate and embryo quality after intracytoplasmic sperm injection. Human Reproduction 11, Edwards R 1986 Causes of early pregnancy loss. Human Reproduction 1, Gibbono A 1998 Which of our genes makes us human? Science 281, Gould KG 1983 Ovum recovery and in vitro fertilization in the chimpanzee. Fertility and Sterility 40, Hewitson L, Schatten G 2002 The use of primates as models for assisted reproduction. Reproductive BioMedicine Online 5, Hewitson L, Takahashi D, Dominko T et al Fertilization and embryo development to blastocysts after intracytoplasmic sperm injection in the rhesus monkey. Human Reproduction 13, Kahraman S, Yakin K, Donmez E et al Relationship between granular cytoplasm of oocytes and pregnancy outcome following intracytoplasmic sperm injection. Human Reproduction 15, Marshall VS, Browne MA, Knowles L et al Ovarian stimulation of marmoset monkeys (Callithrix jacchus) using recombinant human follicle stimulating hormone. Ovarian stimulation of marmoset monkeys (Callithrix jacchus) using recombinant human follicle stimulating hormone. Journal of Medical Primatology 32, 57. Meriano JS, Alexis J, Visram-Zaver S et al Tracking of oocyte dysmorphism for ICSI patients may prove relevant to the outcome in subsequent patient cycles. Human Reproduction 16, Mikkelsen AL, Lindenberg S 2001 Morphology of in-vitro mature oocytes: impact on fertility potential and embryo quality. Human Reproduction 16, Ozasa H, Gould KG 1987 Induction of follicular growth in the squirrel monkey (Saimiri sciureus): enhanced recovery of mature ova for fertilization in vitro. Archives of Gynecology 240, Serhal PF, Ranieri DM, Kinis A et al Oocyte morphology predicts outcome of intracytoplasmic sperm injection. Human Reproduction 12, Van Blerkom J 1990 Occurrence ad developmental consequence of aberrant cellar organization in meiotically mature human oocytes after exogenous ovarian hyperstimulation. Journal of Electron Microscope Technology 16, Van Blerkom J 1994 Developmental failure in human reproduction associated with chromosomal abnormalities and cytoplasmic pathologies in meiotically mature oocytes. In Van Blerkom (ed.) The Biological Basis of Early Human Reproductive Failure. Oxford University Press, Oxford, pp Van Blerkom J, Henry GH 1992 Oocyte dysmorphism and aneuploidy in meiotically-mature human oocytes after ovarian stimulation. Human Reproduction 7, Xia P 1997 Intracytoplasmic sperm injection: correlation of oocyte grade based on polar body, perivitelline space and cytoplasmic inclusion with fertilization rate and embryo quality. Human Reproduction 12, Received 9 February 2004; refereed 3 March 2004; accepted 28 April
Article Prognosis of oocytes showing aggregation of smooth endoplasmic reticulum
RBMOnline - Vol 16 No 1. 2008 113-118 Reproductive BioMedicine Online; www.rbmonline.com/article/3026 on web 15 November 2007 Article Prognosis of oocytes showing aggregation of smooth endoplasmic reticulum
More informationOccurrence and developmental consequences of vacuoles throughout preimplantation development
Occurrence and developmental consequences of vacuoles throughout preimplantation development Thomas Ebner, Ph.D., Marianne Moser, Ph.D., Michael Sommergruber, M.D., Ute Gaiswinkler, M.D., Omar Shebl, M.D.,
More informationArticle Effect of gonadotrophin priming on in-vitro maturation of oocytes collected from women at risk of OHSS
RBMOnline - Vol 13. No 3. 2006 340 348 Reproductive BioMedicine Online; www.rbmonline.com/article/2328 on web 12 June 2006 Article Effect of gonadotrophin priming on in-vitro maturation of oocytes collected
More informationMORPHOLOGICAL MARKERS of OOCYTE QUALITY
MORPHOLOGICAL MARKERS of OOCYTE QUALITY Thomas Ebner Landes- Frauen- und Kinderklinik, IVF-Unit Linz, Austria ESHRE Campus Tours April 2008 William HARVEY: Exercitationes de Generatione Animalium (1651)
More informationHigh Serum FSH is Associated with Brown Oocyte Formation and a Lower Pregnacy Rate in Human IVF Parctice
Original Paper 2016 The Author(s). 2016 Published The Author(s) by S. Karger AG, Basel Published online: July July 21, 21, 2016 2016 Published by S. Karger AG, Basel 677 1421-9778/16/0392-0677$39.50/0
More informationStudy on Several Factors Involved in IVF-ET of Human Beings
Study on Several Factors Involved in IVF-ET of Human Beings Lei X 1, Zhuoran W 1, Bin L 1, Huiming L 1, Hongxiu Z 1, Yajuan Z 1, Yingbo Q 1, Guixue Z 2 1 The First Clinical College of Harbin Medical University,
More informationPossible factors affecting the development of oocytes in in-vitro maturation
Human Reproduction Vol. 15, (Suppl. 5) pp. 11-17, 2000 Possible factors affecting the development of oocytes in in-vitro maturation Anne Lis Mikkelsen 1 ' 2, Steven Smith 1 and Svend Lindenberg 1 ^he Fertility
More informationArticle Blood clots in the cumulus oocyte complex predict poor oocyte quality and postfertilization
RBMOnline - Vol 16 No 6. 2008 801-807 Reproductive BioMedicine Online; www.rbmonline.com/article/3237 on web 14 April 2008 Article Blood clots in the cumulus oocyte complex predict poor oocyte quality
More informationPreimplantation genetic diagnosis: polar body and embryo biopsy
Human Reproduction, Vol. 15, (Suppl. 4), pp. 69-75, 2000 Preimplantation genetic diagnosis: polar body and embryo biopsy Luca Gianaroli SISMER, Via Mazzini 12, 40138 Bologna, Italy Scientific Director
More informationASSISTED REPRODUCTIVE TECHNOLOGIES (ART)
ASSISTED REPRODUCTIVE TECHNOLOGIES (ART) Dr. Herve Lucas, MD, PhD, Biologist, Andrologist Dr. Taher Elbarbary, MD Gynecologist-Obstetrician Geneva Foundation for Medical Education and research Definitions
More informationIVF: PAST, PRESENT AND FUTURE
IVF: PAST, PRESENT AND FUTURE Mark Larman Chief Scientific Officer 1 HISTORY OF IVF IVF first achieved with rabbits in 1959 IVF with human gametes - pioneered by Robert Edwards and Patrick Steptoe during
More informationArticles Does pronuclear morphology and/or early cleavage rate predict embryo implantation potential?
RBMOnline - Vol 2. No 1. 12 16 Reproductive BioMedicine Online webpaper 2000/039 on web 7/2/01 Articles Does pronuclear morphology and/or early cleavage rate predict embryo implantation potential? Dr Monalill
More informationLOW RESPONDERS. Poor Ovarian Response, Por
LOW RESPONDERS Poor Ovarian Response, Por Patients with a low number of retrieved oocytes despite adequate ovarian stimulation during fertility treatment. Diagnosis Female About Low responders In patients
More informationRole of embryo morphology in Intracytoplasmic Sperm Injection cycles for prediction of pregnancy
Iranian Journal of Reproductive Medicine Vol.5. No.1. pp:23-27, Winter 2007 Role of embryo morphology in Intracytoplasmic Sperm Injection cycles for prediction of pregnancy Mir Mehrdad Farsi, Ph.D., Ali
More informationRelation between the Number and Size of Follicles in Ovulation Induction and the Rate of Pregnancy
Relation between the Number and Size of Follicles in Ovulation Induction and the Rate of Pregnancy Aseel Mosa Jabber M.SC.G.O. The department of Obstetrics and Gynecology, Faculty of Medicine Thi-qar university
More informationP.M.M.Kastrop 1, S.M.Weima, R.J.Van Kooij and E.R.Te Velde
Human Reproduction vol.14 no.1 pp.65 69, 1999 Comparison between intracytoplasmic sperm injection and in-vitro fertilization (IVF) with high insemination concentration after total fertilization failure
More informationAcupuncture Treatment For Infertile Women Undergoing Intracytoplasmic Sperm injection
Acupuncture Treatment For Infertile Women Undergoing Intracytoplasmic Sperm injection Sandra L. Emmons, MD Phillip Patton, MD Source: Medical Acupuncture, A Journal For Physicians By Physicians Spring
More informationFailed fertilization after clinical intracytoplasmic sperm injection
Failed fertilization after clinical intracytoplasmic sperm injection Reproductive BioMedicine Online 2009 Vol. 19 No.2. 216 220 Present by R4 郭恬妮 Introduction intracytoplasmic sperm injection (ICSI) choice
More informationCryotop Vitrification Affects Oocyte Quality and Embryo Developmental Potential
Cronicon OPEN ACCESS Ling Jia*, Bo Xu*, Yu-sheng Liu and Xian-hong Tong Center for Reproductive Medicine, Anhui Provincial Hospital Affiliated to Anhui Medical University, China *These authors contributed
More informationComparison between day-2 embryos obtained either from ICSI or resulting from short insemination IVF: influence of maternal age*
Human Reproduction vol.15 no.8 pp.1776 1780, 2000 Comparison between day-2 embryos obtained either from ICSI or resulting from short insemination IVF: influence of maternal age* Yves Ménézo 1,3 and Yona
More informationI. ART PROCEDURES. A. In Vitro Fertilization (IVF)
DFW Fertility Associates ASSISTED REPRODUCTIVE TECHNOLOGY (ART) Welcome to DFW Fertility Associates/ Presbyterian-Harris Methodist Hospital ARTS program. This document provides an overview of treatment
More informationAgonist versus antagonist in ICSI cycles: a randomized trial and cost effectiveness analysis Badrawi A, Zaki S, Al-Inany H, Ramzy A M, Hussein M
Agonist versus antagonist in ICSI cycles: a randomized trial and cost effectiveness analysis Badrawi A, Zaki S, Al-Inany H, Ramzy A M, Hussein M Record Status This is a critical abstract of an economic
More informationMSOME I+II: A NEW CUT-OFF VALUE FOR MALE INFERTILITY AND EMBRYO DEVELOPMENT PREDICTION ON INTRACYTOPLASMIC SPERM INJECTION CYCLES
MSOME I+II: A NEW CUT-OFF VALUE FOR MALE INFERTILITY AND EMBRYO DEVELOPMENT PREDICTION ON INTRACYTOPLASMIC SPERM INJECTION CYCLES Edson Borges Jr 1,2, ; Bianca Ferrarini Zanetti 1,2, Daniela Paes de Almeida
More informationOptimal ICSI timing after the first polar body extrusion in in vitro matured human oocytes
Human Reproduction Vol.22, No.7 pp. 1991 1995, 2007 Advance Access publication on May 18, 2007 doi:10.1093/humrep/dem124 Optimal ICSI timing after the first polar body extrusion in in vitro matured human
More information% Oocyte Donation Pregnancyes (days 3)
Ovulation induction in oocyte donors Roma- September 2007 Dr. José Remohí Dr. Carmen Rubio Dr. Amparo Mercader Dr. Pilar Alama Dr. Marco Melo Evolution of oocyte donation cycles 1500 1500 1000 58% 661
More informationUtility of color Doppler indices of dominant follicular
Ultrasound Obstet Gynecol 2002; 20: 592 596 Utility of color Doppler indices of dominant follicular Blackwell Science, Ltd blood flow for prediction of clinical factors in in vitro fertilization-embryo
More informationIN VITRO MATURATION OF HUMAN OOCYTES
REVIEW ARTICLE IN VITRO MATURATION OF HUMAN OOCYTES Yu-Hung Lin 1,2, Jiann-Loung Hwang 1,3 * 1 Department of Obstetrics and Gynecology, Shin Kong Wu Ho-Su Memorial Hospital, 2 School of Medicine, Fu Jen
More informationInfertility treatment
In the name of God Infertility treatment Treatment options The optimal treatment is one that provide an acceptable success rate, has minimal risk and is costeffective. The treatment options are: 1- Ovulation
More informationArticle Luteal hormonal profile of oocyte donors stimulated with a GnRH antagonist compared with natural cycles
RBMOnline - Vol 13. No 3. 2006 326 330 Reproductive BioMedicine Online; www.rbmonline.com/article/1911 on web 13 June 2006 Article Luteal hormonal profile of oocyte donors stimulated with a GnRH antagonist
More informationSTUDIES OF THE HUMAN UNFERTILIZED TUBAL OVUM*t
FERTILITY AND STERILITY Copyright @ 1973 by The Williams & Wilkins Co. Vol. 24, No.8, August 1973 Printed in U.S.A. STUDIES OF THE HUMAN UNFERTILIZED TUBAL OVUM*t C. NORIEGA, M.D., AND C. OBERTI, M.D.
More informationComparison of serum and follicular fluid hormone levels with recombinant and urinary human chorionic gonadotropin during in vitro fertilization
Comparison of serum and follicular fluid hormone levels with recombinant and urinary human chorionic gonadotropin during in vitro fertilization Peter Kovacs, M.D., a Timea Kovats, M.D., a Artur Bernard,
More informationAssisted Reproduction. By Dr. Afraa Mahjoob Al-Naddawi
Assisted Reproduction By Dr. Afraa Mahjoob Al-Naddawi Learning Objectives: By the end of this lecture, you will be able to: 1) Define assisted reproductive techniques (ART). 2) List indications for various
More informationFollicular fluid steroid hormone levels are associated with fertilization outcome after intracytoplasmic sperm injection
Follicular fluid steroid hormone levels are associated with fertilization outcome after intracytoplasmic sperm injection Julie D. Lamb, M.D., a A. Musa Zamah, M.D., Ph.D., a Shehua Shen, M.D., a Charles
More informationdifferent ratios of PMSG and HCG on the occurrence of follicular haemorrhage THE induction of ovulation with PMSG and HCG in the rat has been studied
Q. Jl exp. Physiol. (1968) 53, 129-135 THE INDUCTION OF OVULATION IN IMMATURE RATS TREATED WITH PREGNANT MARE'S SERUM GONADOTROPHIN AND HUMAN CHORIONIC GONADOTROPHIN. By S. F. LUNN and E. T. BELL. From
More informationComparison of embryo development in sibling oocytes cultured in two different sequential media
Middle East Fertility Society Journal Vol. 9, No. 2, 2004 Copyright Middle East Fertility Society Comparison of embryo development in sibling oocytes cultured in two different sequential media Necati Findikli,
More informationArticle Effect of denuding on polar body position in invitro matured oocytes
RBMOnline - Vol 17 No 4. 2008 515-519 Reproductive BioMedicine Online; www.rbmonline.com/article/3290 on web 22 August 2008 Article Effect of denuding on polar body position in invitro matured oocytes
More informationIvf day 6 estradiol level
Ivf day 6 estradiol level Search It is also important to measure the estradiol on day 3. Day 2 is fine. The reason its day 3 is 15-20 years ago, the IVF medications were always started on day 3. Day 3
More informationAbstract. Introduction. Materials and methods. Patients and methods
RBMOnline - Vol 8. No 3. 344-348 Reproductive BioMedicine Online; www.rbmonline.com/article/1178 on web 20 January 2004 Article Cumulative live birth rates after transfer of cryopreserved ICSI embryos
More informationAbstract. Introduction. RBMOnline - Vol 16 No Reproductive BioMedicine Online; on web 30 April 2008
RBMOnline - Vol 16 No 6. 2008 851-858 Reproductive BioMedicine Online; www.rbmonline.com/article/3248 on web 30 April 2008 Article First polar body and nucleolar precursor body morphology is related to
More informationOocyte maturation. A.Trounson 1 ' 3, C.Anderiesz 1, G.MJones 1, A.Kausche 1, N.Lolatgis 2 and C.Wood 2
A.Trounson 1 ' 3, C.Anderiesz 1, G.MJones 1, A.Kausche 1, N.Lolatgis 2 and C.Wood 2 Centre for Early Human Development, Institute of Reproduction and Development, Monash University, Monash Medical Centre,
More informationArticle Cryopreservation of immature and in-vitro matured human oocytes by vitrification
RBMOnline - Vol 19 No 3. 2009 369-373 Reproductive BioMedicine Online; www.rbmonline.com/article//3704 on web 8 July 2009 Article Cryopreservation of immature and in-vitro matured human oocytes by vitrification
More informationAbstract. Introduction. RBMOnline - Vol 19. No Reproductive BioMedicine Online; on web 24 August 2009
RBMOnline - Vol 19. No 4. 2009 599 603 Reproductive BioMedicine Online; www.rbmonline.com/article/3872 on web 24 August 2009 Article Assisted reproduction in women over 40 years of age: how old is too
More informationArticle Prediction of pituitary down-regulation by evaluation of endometrial thickness in an IVF programme
RBMOnline - Vol 8. No 5. 2004 595-599 Reproductive BioMedicine Online; www.rbmonline.com/article/1065 on web 17 March 2004 Article Prediction of pituitary down-regulation by evaluation of endometrial thickness
More informationEffects of Preservation of Porcine Oocytes by Dibutyryl Cyclic AMP on in vitro Maturation, Fertilization and Development
JARQ 45 (3), 295 300 (2011) http://www.jircas.affrc.go.jp of Porcine Oocytes Using dbcamp Effects of of Porcine Oocytes by Dibutyryl Cyclic AMP on in vitro Maturation, Fertilization and Development Dai-ichiro
More informationOriginal Effect of A Time-lapse Incubator (EmbryoScope ) on in vitro Culture of Human Embryos
J. Mamm. Ova Res. Vol. 31 (1), 40 44, 2014 40 Original Effect of A Time-lapse Incubator (EmbryoScope ) on in vitro Culture of Human Embryos Yamato Mizobe*, Toshiaki Akiyoshi, Shiho Minami, Kan Matsuo,
More informationBiology of fertility control. Higher Human Biology
Biology of fertility control Higher Human Biology Learning Intention Compare fertile periods in females and males What is infertility? Infertility is the inability of a sexually active, non-contracepting
More informationArticle Polar body morphology and spindle imaging as predictors of oocyte quality
RBMOnline - Vol 11. No 1. 2005 36 42 Reproductive BioMedicine Online; www.rbmonline.com/article/1744 on web 25 April 2005 Article Polar body morphology and spindle imaging as predictors of oocyte quality
More informationThe relationship between pregnancy outcome and smooth endoplasmic reticulum clusters in MII human oocytes
Human Reproduction Vol.19, No.7 pp. 1591±1597, 2004 Advance Access publication June 4, 2004 DOI: 10.1093/humrep/deh258 The relationship between pregnancy outcome and smooth endoplasmic reticulum clusters
More informationUnderstanding eggs, sperm and embryos. Marta Jansa Perez Wolfson Fertility Centre
Understanding eggs, sperm and embryos Marta Jansa Perez Wolfson Fertility Centre What does embryology involve? Aims of the embryology laboratory Creation of a large number of embryos and supporting their
More informationBenefit of intracytoplasmic sperm injection in patients with a high incidence of triploidy in a prior in vitro fertilization cycle
IN VITRO FERTILIZATION Benefit of intracytoplasmic sperm injection in patients with a high incidence of triploidy in a prior in vitro fertilization cycle Sunny H. Jun, M.D., a Thomas O Leary, B.S., b Katharine
More informationArticle Minimal ovarian stimulation with clomiphene citrate: a large-scale retrospective study
RBMOnline - Vol 15. No 2. 2007 134-148 Reproductive BioMedicine Online; www.rbmonline.com/article/2711 on web 13 June 2007 Article Minimal ovarian stimulation with clomiphene citrate: a large-scale retrospective
More informationWOMEN & INFANTS HOSPITAL Providence, RI CONSENT FOR IVF WITH EMBRYO TRANSFER
*40639* 40639 WOMEN & INFANTS HOSPITAL Providence, RI 02905 CONSENT FOR IVF WITH EMBRYO TRANSFER I have requested treatment by the physicians and (Print Patient s name) staff of the Women & Infants Fertility
More informationThe effect of adding oral oestradiol to progesterone as luteal phase support in ART cycles a randomized controlled study
Clinical research The effect of adding oral oestradiol to progesterone as luteal phase support in ART cycles a randomized controlled study Ashraf Moini 1,2, Shahrzad Zadeh Modarress 3, Elham Amirchaghmaghi
More informationIn Vitro Fertilization What to expect
Patient Education In Vitro Fertilization What to expect This handout describes how to prepare for and what to expect when you have in vitro fertilization. It provides written information about this process,
More informationFirst successful pregnancies following embryo selection using Time-lapse technology in Iran: Case report
Iran J Reprod Med Vol. 13. No. 4. pp: 237242, April 2015 Case report First successful pregnancies following embryo selection using Timelapse technology in Iran: Case report Azita Faramarzi Ph.D. candidate,
More informationIVF AND PREIMPLANTATION GENETIC TESTING FOR ANEUPLOIDY (PGT-A) WHAT THE COMMUNITY PHYSICIAN NEEDS TO KNOW
IVF AND PREIMPLANTATION GENETIC TESTING FOR ANEUPLOIDY (PGT-A) WHAT THE COMMUNITY PHYSICIAN NEEDS TO KNOW Jon Havelock, MD, FRCSC, FACOG Co-Director - PCRM Disclosure No conflict of interest in relation
More informationOVULATION INDUCTION. Hsiang, Kaohsiung, Taiwan (FAX: ; adm.cgmh.org.tw).
OVULATION INDUCTION Significantly superior response in the right ovary compared with the left ovary after stimulation with follicle-stimulating hormone in a pituitary down-regulation regimen Kuo-Chung
More informationOriginal Article Correlation between morphological abnormalities in the human oocyte zona pellucida, fertilization failure and embryonic development
Int J Clin Exp Med 2016;9(1):260-267 www.ijcem.com /ISSN:1940-5901/IJCEM0015149 Original Article Correlation between morphological abnormalities in the human oocyte, fertilization failure and embryonic
More informationIs it the seed or the soil? Arthur Leader, MD, FRCSC
The Physiological Limits of Ovarian Stimulation Is it the seed or the soil? Arthur Leader, MD, FRCSC Objectives 1. To consider how ovarian stimulation protocols work in IVF 2. To review the key events
More informationPrediction of embryo developmental potential and pregnancy based on early stage morphological characteristics
Prediction of embryo developmental potential and pregnancy based on early stage morphological characteristics Peter Sjöblom, Ph.D., a,c Judith Menezes, Ph.D., b Lisa Cummins, B.Sc., b Bagyalakshmi Mathiyalagan,
More informationInfluence ovarian stimulation on oocyte and embryo quality. Prof.Dr. Bart CJM Fauser
Influence ovarian stimulation on oocyte and embryo quality Prof.Dr. Bart CJM Fauser How to balance too much vs too little? Lecture Outline Context ovarian stimulation Impact ovarian stimulation on oocyte
More informationEffect of Bovine Follicular Fluid Added to the Maturation Medium on Sperm Penetration in Pig Oocytes Matured In Vitro
Article Effect of Bovine Follicular Fluid Added to the Maturation Medium on Sperm Penetration in Pig Oocytes Matured In Vitro Abstract Naoki ISOBE Research Associate Graduate School for International Development
More informationPronuclear scoring as a predictor of embryo quality in in vitro fertilization program
FOLIA HISTOCHEMICA ET CYTOBIOLOGICA Vol. 45, Supp. 1, 2007 pp. 87-91 Pronuclear scoring as a predictor of embryo quality in in vitro fertilization program Magdalena Depa-Martynow, Piotr Jedrzejczak, Leszek
More informationFertilization failures and abnormal fertilization after intracytoplasmic sperm injection
Fertilization failures and abnormal fertilization after intracytoplasmic sperm injection Sean P.Flaherty 1, Dianna Payne and Colin D.Matthews Reproductive Medicine Unit, Department of Obstetrics and Gynaecology,
More information2017 United HealthCare Services, Inc.
UnitedHealthcare Pharmacy Clinical Pharmacy Programs Program Number 2017 P 1143-4 Program Prior Authorization/Notification Medication Menopur (menotropins) * P&T Approval Date 8/2014, 5/2015, 5/2016, 5/2017
More informationRejuvenation of Gamete Cells; Past, Present and Future
Rejuvenation of Gamete Cells; Past, Present and Future Denny Sakkas PhD Scientific Director, Boston IVF Waltham, MA, USA Conflict of Interest I have no conflict of interest related to this presentation.
More informationINFERTILITY. Services - Part 2
INFERTILITY Services - Part 2 1 Imprint Published in January, 2013 By Victory A.R.T. Laboratory Phils, Inc. These articles were compiled by in hopes of helping bring into light infertility questions and
More informationThe Human Menstrual Cycle
The Human Menstrual Cycle Name: The female human s menstrual cycle is broken into two phases: the Follicular Phase and the Luteal Phase. These two phases are separated by an event called ovulation. (1)
More informationInformation Booklet. Exploring the causes of infertility and treatment options.
Information Booklet Exploring the causes of infertility and treatment options www.ptafertility.co.za info@ptafertility.co.za +27 12 998 8854 Faith is taking the first step even if you don t see the whole
More informationIncidence and development of zygotes exhibiting abnormal pronuclear disposition after identification of two pronuclei at the fertilization check
Incidence and development of zygotes exhibiting abnormal pronuclear disposition after identification of two pronuclei at the fertilization check David E. Reichman, M.D., Katharine V. Jackson, B.A., and
More informationSynchronization between embryo development and endometrium is a contributing factor for rescue ICSI outcome
Reproductive BioMedicine Online (2012) 24, 527 531 www.sciencedirect.com www.rbmonline.com ARTICLE Synchronization between embryo development and endometrium is a contributing factor for rescue ICSI outcome
More informationINDICATIONS OF IVF/ICSI
PROCESS OF IVF/ICSI INDICATIONS OF IVF/ICSI IVF is most clearly indicated when infertility results from one or more causes having no other effective treatment; Tubal disease. In women with blocked fallopian
More informationEffects of triploidy after intracytoplasmic sperm injection on in vitro fertilization cycle outcome
Effects of triploidy after intracytoplasmic sperm injection on in vitro fertilization cycle outcome Molina B. Dayal, M.D., M.P.H., Paul R. Gindoff, M.D., Abbaa Sarhan, M.D., Anil Dubey, Ph.D., Douglas
More informationOutlook Strategies in human in-vitro maturation and their clinical outcome
RBMOnline - Vol 10. No 5. 2005 593 599 Reproductive BioMedicine Online; www.rbmonline.com/article/1677 on web 11 March 2005 Outlook Strategies in human in-vitro maturation and their clinical outcome Dr
More informationPuerto Rico Fertility Center
Puerto Rico Fertility Center General Information of the In-Vitro Fertilization Program Dr. Pedro J. Beauchamp First test-tube baby IN PUERTO RICO Dr. Pedro Beauchamp with Adlin Román in his arms. Paseo
More informationPremature progesterone elevation impairs implantation and live birth rates in GnRH-agonist IVF/ICSI cycles
Arch Gynecol Obstet (2010) 281:747 752 DOI 10.1007/s00404-009-1248-0 REPRODUCTIVE MEDICINE Premature progesterone elevation impairs implantation and live birth rates in GnRH-agonist IVF/ICSI cycles Esra
More informationEndometrial advancement after triggering with recombinant or urinary HCG: a randomized controlled pilot study
Reproductive BioMedicine Online (2010) 21, 50 55 www.sciencedirect.com www.rbmonline.com ARTICLE Endometrial advancement after triggering with recombinant or urinary HCG: a randomized controlled pilot
More informationH.Van de Velde 1, Z.P.Nagy, H.Joris, A.De Vos and A.C.Van Steirteghem
Human Reproduction vol.12 no.10 pp.2246 2250, 1997 Effects of different hyaluronidase concentrations and mechanical procedures for cumulus cell removal on the outcome of intracytoplasmic sperm injection
More informationM Magdy EL-Sheikh FRCOG London, FRCS Glasgow Director ART unit Dr Soliman Fakeeh hospital Jeddah Saudi Arabia
M Magdy EL-Sheikh FRCOG London, FRCS Glasgow Director ART unit Dr Soliman Fakeeh hospital Jeddah Saudi Arabia The versatile nature reproduction Reproduction as a sign of life Reproduction as a sign of
More informationWOMEN & INFANTS HOSPITAL Providence, RI CONSENT FOR IN VITRO FERTILIZATION USING A GESTATIONAL CARRIER (PATIENT/INTENDED PARENTS) 1.
*40675* 40675 MR-838 (9-2017) WOMEN & INFANTS HOSPITAL Providence, RI 02905 CONSENT FOR IN VITRO FERTILIZATION USING A GESTATIONAL CARRIER (PATIENT/INTENDED PARENTS) 1. I, and (Print Patient s name) (Print
More informationLaura Rienzi Senior Clinical Embryologist
www.generaroma.it CLINICA VALLE GIULIA, Rome SALUS, Marostica UMBERTIDE, Perugia Laura Rienzi Senior Clinical Embryologist Salzburg, Austria 1,2 April 2011 No commercial activities are related to this
More informationThe impact of HMG on follicular fluid hormone levels, embryo quality and IVF outcome
Eastern Journal of Medicine 19 (2014) 22-27 Original Article The impact of HMG on follicular fluid hormone levels, embryo quality and IVF outcome Gokce Anik Ilhan a,*, Gozde Erkanli Senturk a, Ozgur Oktem
More informationOocyte zona pellucida dysmorphology is associated with diminished in-vitro fertilization success
Sauerbrun-Cutler et al. Journal of Ovarian Research (2015) 8:5 DOI 10.1186/s13048-014-0111-5 RESEARCH Open Access Oocyte zona pellucida dysmorphology is associated with diminished in-vitro fertilization
More informationPatient Information: Patient Name: Date of Birth:
Weill Cornell Medicine Ronald O. Perelman and Claudia Cohen Center for Reproductive Medicine Informed Consent for Oocyte (Egg) Cryopreservation Patient Information: Part 1: I have requested to be treated
More informationAdenosine Triphosphate Content in Human Unfertilized Oocytes, Undivided Zygotes and Embryos Unsuitable for Transfer or Cryopreservation
The Journal of International Medical Research 2012; 40: 734 739 Adenosine Triphosphate Content in Human Unfertilized Oocytes, Undivided Zygotes and Embryos Unsuitable for Transfer or Cryopreservation J
More informationLaboratoires Genevirer Menotrophin IU 1.8.2
Important missing information VI.2 VI.2.1 Elements for a Public Summary Overview of disease epidemiology Infertility is when a woman cannot get pregnant (conceive) despite having regular unprotected sexual
More informationMenstruation-free interval and ongoing pregnancy in IVF using GnRH antagonists
Human Reproduction Vol.21, No.4 pp. 1012 1017, 2006 Advance Access publication December 8, 2005. doi:10.1093/humrep/dei415 Menstruation-free interval and ongoing pregnancy in IVF using GnRH antagonists
More informationAbstract. Introduction. RBMOnline - Vol 8. No Reproductive BioMedicine Online; on web 22 December 2003
RBMOnline - Vol 8. No 2. 196-206 Reproductive BioMedicine Online; www.rbmonline.com/article/1113 on web 22 December 2003 Article Assessment of DNA fragmentation and aneuploidy on poor quality human embryos
More informationEffect of ovarian stimulation on oocyte quality and embryonic aneuploidy: a prospective, randomised controlled trial
FULL PROJECT TITLE: Effect of ovarian stimulation on oocyte quality and embryonic aneuploidy: a prospective, randomised controlled trial (STimulation Resulting in Embryonic Aneuploidy using Menopur (STREAM)
More informationin vitro fertilization
FERTILITY AND STERILITY VOL 69, NO. 6, JUNE 1998 Copyright (#1998 American Society for Reproductive Medicine Published by Elsevier Science Inc. Printed on acid-free paper in U.S.A. Elevated levels of basal
More informationIN VITRO FERTILIZATION OF RABBIT EGGS IN OVIDUCT SECRETIONS FROM DIFFERENT DAYS BEFORE AND AFTER OVULATION*
FERTILITY AND STERILITY Copyright~ 1975 The American Fertility Society Vol. 26, No.7, July 1975 Printed in U.SA. IN VITRO FERTILIZATION OF RABBIT EGGS IN OVIDUCT SECRETIONS FROM DIFFERENT DAYS BEFORE AND
More informationExtended embryo culture in human assisted reproduction treatments
Human Reproduction Vol.16, No.5 pp. 902 908, 2001 Extended embryo culture in human assisted reproduction treatments M.T.Langley 1,3, D.M.Marek 1, D.K.Gardner 2, K.M.Doody 1 and K.J.Doody 1 1 Center for
More informationDay 4 embryo selection is equal to Day 5 using a new embryo scoring system validated in single embryo transfers
Human Reproduction Vol.23, No.7 pp. 1505 1510, 2008 Advance Access publication on February 21, 2008 doi:10.1093/humrep/dem419 Day 4 embryo selection is equal to Day 5 using a new embryo scoring system
More informationOocyte morphology correlates with embryo quality and pregnancy rate after intracytoplasmic sperm injection
FERTILITY AND STERILITY VOL. 72, NO. 2, AUGUST 1999 Copyright 1999 American Society for Reproductive Medicine Published by Elsevier Science Inc. Printed on acid-free paper in U.S.A. Oocyte morphology correlates
More informationCauses of Infertility and Treatment Options
Causes of Infertility and Treatment Options Dr Mrs.Kiran D. Sekhar Former vice President-FOGSI Former Chairperson- Genetics and Foetal medicine-fogsi Founder and Medical Director-Kiran Infertility centre
More informationIn Vitro Fertilization and Embryo Transfer
Acta Medica et Biologica Vol. 41, No.4, 171-176, 1993 The Influence of Low Ovarian Response on the Results of In Vitro Fertilization and Embryo Transfer Hirofumi HIRASAWA Department of Obstetrics and Gynecology,
More informationMicroinsemination (Intracytoplasmic Sperm Injection) Microinsemination schedule. 1. Preparation of mediums
Microinsemination (Intracytoplasmic Sperm Injection) Masumi Hirabayashi Section of Mammalian Transgenesis, Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, National
More informationArticle IVM the first choice for IVF in Italy
RBMOnline - Vol 13 No 2. 2006 159-165 Reproductive BioMedicine Online; www.rbmonline.com/article/2250 on web 24 May 2006 Article IVM the first choice for IVF in Italy Maria Beatrice Dal Canto graduated
More informationFixed Schedule for in vitro Fertilization and Embryo Transfer: Comparison of Outcome between the Short and the Long Protocol
Yamanashi Med. J. 14(3), 77 ~ 82, 1999 Original Article Fixed Schedule for in vitro Fertilization and Embryo Transfer: Comparison of Outcome between the Short and the Long Protocol Tsuyoshi KASAI and Kazuhiko
More information