R. Gorman and C.C. Adley Microbiology Laboratory, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland
|
|
- Roderick Booth
- 5 years ago
- Views:
Transcription
1 Letters in Applied Microbiology 2004, 38, doi: /j x x An evaluation of five preservation techniques and conventional freezing temperatures of )20 C and )85 C for long-term preservation of Campylobacter jejuni R. Gorman and C.C. Adley Microbiology Laboratory, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland 2003/0402: received 14 May 2003, revised 9 January 2004 and accepted 22 January 2004 ABSTRACT R. G O R M A N A N D C.C. A D L E Y Aims: This study aimed to identify a simple, inexpensive preservation technique that will allow a quick and reliable recovery of Campylobacter jejuni following long-term periods of preservation. Methods and Results: Preservation techniques include (i) Cryobank microbial preservation system using hypertonic cryopreservative solution and glass beads, (ii) Cryobank microbial preservation system using defibrinated lysed horse blood and glass beads, (iii) FBP medium, (iv) 15% glycerol/85% nutrient broth no. 2 culture, and (v) 50% glycerol/50% nutrient broth no. 2 culture. Each preservation technique was evaluated over a 1-year period at conventional freezing temperatures of )20 C and )85 C. Replacement of cryopreservative fluid in commercially prepared vials of glass beads with lysed horse blood increased the duration of preservation of Camp. jejuni by up to 6 months. Conclusions: FBP medium proved the most successful preservation technique with 100 and 80% recovery after 1 year at )85 C and )20 C, respectively. Significance and Impact of the Study: This study demonstrated a simple inexpensive preservation method for long-term storage of Camp. jejuni. Keywords: Campylobacter jejuni, cryopreservation, FBP medium, lysed horse blood. INTRODUCTION Campylobacter spp. can cause a wide spectrum of infections including, human diarrhoeal disease, reproductive disorders in domestic animals and opportunistic infections in immuno-compromised human patients (Park et al. 1991). There have been many reports of an association between Campylobacter jejuni (Camp. jejuni) enteritis and Guillain- Barré syndrome (Ang et al. 2000; Hadden and Gregson 2001). Globally Camp. jejuni has been recognized as a leading cause of human gastroenteritis (Frost et al. 1996; Altekruse et al. 1999; Whyte and Igoe 1999). This worldwide recognition has generated considerable interest in the development of special selective techniques, for optimal Correspondence to: Dr Catherine C. Adley, Microbiology Laboratory, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland ( Catherine.Adley@ul.ie). growth and isolation of Campylobacter from clinical and environmental sources (Butzler and Skirrow 1979; Park et al. 1991; Tran 1998). However, the preservation of Campylobacter spp. long term has posed problems. A number of published reports have described simple short-term preservation techniques for Campylobacter (Amies 1967; Wang et al. 1980; Amos 1981; Luechtefeld et al. 1981; Rogol et al. 1990). However, long-term preservation is required for storage of quality control strains, teaching, research, epidemiological purposes and quantitative and qualitative analyses (White and Sands 1985; Rogol et al. 1990). Extended preservation of Campylobacter is hindered by its sensitivity to oxygen (Hoffman et al. 1979; Bolton et al. 1984; Lee et al. 1988) and the formation of a viable but non-culturable form of the bacteria (Jones et al. 1991; Saha and Sanyal 1991). Long-term preservation of Campylobacter described in the literature involves liquid ª 2004 The Society for Applied Microbiology
2 LONG-TERM PRESERVATION OF CAMP. JEJUNI 307 drying (Malik and Lang 1996), liquid nitrogen and freezedrying (Mills and Gherna 1988), however, these methods require equipment not available in all laboratories. This study was an observation of the potential of five preservation methods to preserve Campylobacter spp. during storage by conventional freezing at )20 C and )85 C to detect which methods were most effective. MATERIALS AND METHODS Materials Bacteriological agar, Columbia agar base, nutrient broth no. 2, yeast extract, CampyGen TM microaerophilic sachets and FBP campylobacter growth supplement [0Æ025% sodium pyruvate (w/v), 0Æ025% sodium metabisulphite (w/v), 0Æ025% ferrous sulphate (w/v)] were purchased from Oxoid (Basingstoke, UK). Defibrinated lysed horse blood was purchased from Unitech (Dublin, Ireland). The commercial cryobank microbial preservation system was purchased from MAST diagnostics (Merseyside, UK). Glycerol was purchased form R.B Chemicals (Tallaght, Dublin, Ireland). The medium was cooled to 50 C and FBP enrichment supplement added aseptically. The medium was gently mixed and 4-ml volumes dispensed aseptically into sterile 15-ml universal tubes. A quantity of 500 ll of fresh Camp. jejuni (Mc Farland 3 4) were inoculated into each of two 4-ml FBP vials. One vial was stored at )20 C and the other at )85 C. Recovery of the organism required complete thawing of the medium. A sterile 10-ll loop of culture was streaked onto a CBA plate, and incubated at 37 C for 48 h under microaerophilic conditions. iv 15% glycerol/85% nutrient broth no. 2 culture. A quantity of 850 ll of fresh Camp. jejuni culture (Mc Farland 3 4) was aseptically transferred into two vials of 150-ll sterile glycerol. The mixtures were emulsified by vortexing and one stored at )20 C and the other at )85 C. Organisms were recovered as described in (iii) above). v 50% glycerol/50% nutrient broth no. 2 culture. This procedure is as described previously for (iv) above except that, 500 ll of culture broth was emulsified with 500 ll of sterile glycerol. Bacterial strains and culture conditions The strains studied were five fresh isolates of Camp. jejuni that were obtained from the Microbiology Laboratory at the Mid-Western Regional Hospital, Limerick, Ireland. These strains were isolated from patients suffering from gastroenteritis. All five cultures were stored using five different preservation methods, at both )20 C (Tricity) and )85 C (Nuaire )85 C Ultralow freezer). Each strain was monitored for viability at 1, 2, 3, 6, 9 and 12-month intervals by subculturing on Columbia Blood Agar (CBA) and incubated at 37 C for 48 h under microaerophilic conditions (5% O 2, 10% CO 2, 85% N 2 ) (Gorman and Adley 2002). Preservation methods i Cryobank microbial preservation system using hypertonic cryopreservative solution and glass beads. This procedure was performed according to manufacturer s instructions. ii Cryobank microbial preservation system using defibrinated lysed horse blood and glass beads. This procedure is as described previously for (i) above with the following exception, prior to harvesting the hypertonic cryopreservative solution was replaced with 750 ll defibrinated lysed horse blood. iii FBP medium. This medium was prepared by autoclaving nutrient broth no. 2, 0Æ12% [w/v] bacteriological agar, 15% [v/v] glycerol and 0Æ1% [w/v] yeast extract. RESULTS Following incubation, CBA plates were examined for culture growth. An estimate of growth of the test strains was made based on the following scale: confluent growth, 3+; semi-confluent growth, 2+; <10 colonies in the primary inoculated area, 1+; no visible growth, ). Results of Camp. jejuni viability over a 12-month period following storage at )20 C and )85 C are summarized in Table 1. DISCUSSION White and Sands (1985) and Feltham et al. (1978) both studied cryopreservation of bacteria using glass beads. This method eliminated the detrimental effects that freezethawing can have on bacteria. This method was not assessed using Campylobacter strains but recovery of sensitive organisms was successful (White and Sands 1985). In our laboratory, strains of bacteria such as E. coli and Salmonella Typhimurium have been recovered from glass beads when stored at )85 C for more than 1 year. Blood is an undefined medium containing iron and detoxifying enzymes such as catalase, peroxidase and superoxide dismutase, which have been shown to reduce toxicity of media (Hoffman et al. 1979). Blood has been recognized as an excellent supplement in the growth and recovery of Campylobacter spp. (Wang et al. 1980; Bolton and Coates 1983; Bolton et al. 1984; Rogol et al. 1990). This study has optimized the advantages of blood and cryogenic glass beads in maintaining viability of Camp. jejuni
3 308 R. GORMAN AND C.C. ADLEY Table 1 Recovery of Campylobacter jejuni over a 12-month period following storage at )20 C and )85 C No. of months Preservation temperature ( C) Preservation method* Isolate no. )20 )85 )20 )85 )20 )85 )20 )85 )20 )85 )20 )85 (i) 1 ) ) ) ++ ) ) ) + ) ) ) ) ) ) ) ) ) 3 ) ++ ) ++ ) ) ) + ) ) ) ) ) ) ) ++ ) + ) ) ) ) ) + ) + ) + ) ) ) ) % Recovery (ii) 1 ) +++ ) +++ ) +++ ) +++ ) ) ) ) +++ ) +++ ) +++ ) +++ ) ++ ) ) +++ ) +++ ) +++ ) ++ ) ) ) +++ ) +++ ) + ) ) +++ ) +++ ) +++ ) +++ % Recovery (iii) ) ) % Recovery (iv) ) +++ ) ) ) ) +++ ) +++ ) +++ % Recovery (v) ) ) ) ) ) ) ) ) ) ) ) ) +++ ) ) ) ) ++ ) ) ) ++ ) +++ ) ) ) ) +++ ) +++ ) ) ) ++ ) +++ ) +++ ) ) % Recovery Confluent growth, 3+; semi-confluent growth, 2+; <10 colonies in the primary inoculated area, 1+; no visible growth, ). *Preservation methods: (i) Cryobank microbial preservation system using hypertonic cryopreservative solution (MAST diagnostics); (ii) Cryobank microbial preservation system using defibrinated lysed horse blood; (iii) FBP medium; (iv) 15% glycerol/85% nutrient broth no. 2 culture; (v) 50% glycerol/50% nutrient broth no. 2 culture. Indicates a test period where no growth was observed but recovery of Campylobacter was found at the next test period. when stored at low temperatures for long periods of time. Replacement of the cryopreservative fluid in the preprepared vial of glass beads with lysed horse blood increased the duration of preservation of Camp. jejuni by up to 6 months when stored at )85 C. During preparation, each individual bead within the vial becomes coated with the inoculated cryopreservative fluid or the inoculated lysed horse blood. Camp. jejuni recovery from cryogenic glass beads stored at )20 C showed poor growth using both these cryopreservative methods. In contrast however, when stored at )85 C a substantial difference in the preservation capability of the cryogenic glass beads for storage of Camp. jejuni when cryopreservative fluid was replaced with lysed horse blood was observed. In our laboratory, strains of Camp. jejuni stored at )85 C have been recovered after 20 months using the cryogenic glass beads replaced with blood method. Difficulty in finding one individual component to replace blood as a supplement in Campylobacter media has been recognized (Bolton and Coates 1983). In a study of 22 supplements screened by Bolton and Coates (1983), only seven were found to facilitate aerotolerance, the most effective being blood. No other individual supplement was as good as lysed horse blood.
4 LONG-TERM PRESERVATION OF CAMP. JEJUNI 309 However, the combination of charcoal, a detoxifying agent, ferrous sulphate and sodium pyruvate (CFP) was found to be effective (Bolton and Coates 1983). George et al. (1978) first described FBP supplement in Campylobacter media to enhance aerotolerance and growth of Camp. fetus. The FBP medium used in this study was the most successful preservation technique examined, after periodic testing over 12 months, 100 and 80% recovery was obtained from strains stored at )85 C and )20 C, respectively. Although the use of cryogenic glass beads eliminates the effects of freeze-thawing, the FBP medium, which required thawing at each test period, was superior at maintaining Camp. jejuni viability at )20 C than the cryogenic glass beads with or without the use of lysed horse blood, and was as effective as the cryogenic glass beads with lysed horse blood following storage at )85 C. Furthermore, in our laboratory Camp. jejuni stored at )20 C in this FBP medium have been recovered after 20 months of storage. The incorporation of FBP in the basal medium, with or without additional supplements, has previously being demonstrated as very successful in maintaining viability of Campylobacter at various temperatures (Rogol et al. 1990; Saha and Sanyal 1991). Temperature is a very important factor for preservation of micro-organisms, and various storage temperatures for preservation of Campylobacter spp. have been studied and employed (Amos 1981; Luechtefeld et al. 1981; Lee et al. 1988; Rogol et al. 1990; Saha and Sanyal 1991). Freezing methods have been utilized for mid-term and long-term preservation of Campylobacter. Mills and Gherna (1988) have carried out a long-term cryopreservation study of Campylobacter using 10% glycerol and Brucella Albimi broth as preservation media. Results from this study found liquid nitrogen to be the most efficient method for maintaining Campylobacter viability. Slow rate freeze-drying was the next most successful, followed by conventional freezing at )65 C. Each method showed viability for up to 2 years. Storage at )20 C in 10% glycerol maintained Campylobacter viability for 7 months. Similarly, results from our study using 15% glycerol maintained 100% Campylobacter viability for 12 months when stored at )85 C. Furthermore, stocks of Camp. jejuni have been recovered after 20 months under such conditions in our laboratory. Malik and Lang (1996) describe the very successful preservation of Campylobacter spp. by liquid-drying under anaerobic conditions with very good recovery rates following storage at both )30 C and )80 C for 12 months. Mills and Gherna (1988) identified liquid nitrogen as an excellent method surpassing conventional freezing conditions for long-term storage of Campylobacter for up to 4 years. Although the uses of liquid nitrogen and freeze-drying have been very successful with regard to long-term storage of Campylobacter, not all laboratories possess the equipment necessary. Saha and Sanyal (1991) have found that at a higher temperature of )10 C Camp. jejuni stored in 15% glycerol loses viability after just 45 days. Similarly, in this study, recovery of samples stored at )20 C gave 100% recovery at 3 months and just 20% recovery at 12 months. Although 50% glycerol stocks are widely used for longterm storage of bacteria such as Salm. Typhimurium, E. coli and Staphylococcus aureus, variable results were observed during Camp. jejuni preservation. In summary, this study has adapted the success of commercial cryogenic glass beads (Feltham et al. 1978; White and Sands 1985). Supplements including lysed horse blood and FBP and the cryopreservative agent glycerol to conventional freezing temperatures of )20 C and )85 C, one of which is available in most scientific laboratories. Five preservation methods were studied for their potential for long-term storage of Campylobacter spp. using two conventional freezing temperatures and identified just one i.e. FBP medium, that could be recommended as a simple and reliable method for long-term storage of Camp. jejuni at )20 C. Additionally, where deep-freezers at much lower temperatures of )85 C are available a selection or combination of FBP medium, the commercial Cryobank microbial preservation system using defibrinated lysed horse blood and glass beads, or 15% glycerol/85% nutrient broth no. 2 culture, can be recommended as successful methods for long-term preservation of Camp. jejuni. ACKNOWLEDGEMENTS The authors would like to acknowledge the assistance afforded by the personnel of the Microbiology Laboratory at the Mid-West Regional Hospital, Limerick, Ireland. This work was funded by an Irish American Partnership and Strategic Research Grant (no. ST99/043). REFERENCES Altekruse, S.F., Stern, N.J., Fields, P.I. and Swerdlow, D.L. (1999) Campylobacter jejuni An emerging food-borne pathogen. Emerging Infectious Diseases 5, Amies, C.R. (1967) A modified formula for the preparation of Stuart s transport medium. Canadian Journal of Public Health 58, Amos, R.W. (1981) Evaluation of Amies transport medium for midterm storage of Campylobacter sp. isolates from human faeces. Medical Laboratory Sciences 38, Ang, C.W., van Doorn, P.A., Endtz, H.P., Merkies, I.S.J., Jacobs, B.C., de Klerk, M.A., van Koningsveld R. and van der Meché, F.G.A., (2000) A case of Guillain-Barré syndrome following a family outbreak of Campylobacter jejuni enteritis. Journal of Neuroimmunology 111,
5 310 R. GORMAN AND C.C. ADLEY Bolton, F.J. and Coates, D. (1983) Development of a blood-free Campylobacter medium; screening tests on basal media and supplements, and the ability of selected supplements to facilitate aerotolerance. Journal of Applied Bacteriology 54, Bolton, F.J., Coates, D. and Hutchinson, D. N. (1984) The ability of campylobacter media supplements to neutralize photochemically induced toxicity and hydrogen peroxide. Journal of Applied Bacteriology 56, Butzler, J.P. and Skirrow, M.B. (1979) Campylobacter enteritis. Clinical Gastroenterology 8, Feltham, R.K.A., Power, A.K., Pell, P.A. and Sneath, P.H.A. (1978) A simple method for storage of bacteria at )76 C. Journal of Applied Biology 44, Frost, J.A., Kelleher, A. and Rowe, B. (1996) Increasing ciprofloxacin resistance in salmonellas in England and Wales Journal of Antimicrobial Chemotherapy 37, George, H.A., Hoffman, P.S., Smibert, R.M. and Kreig, N.R. (1978) Improved media for growth and aerotolerance of Campylobacter fetus. Journal of Clinical Microbiology 8, Gorman, R. and Adley, C.C. (2002) A study of the cross-contamination of food-borne pathogens in the domestic kitchen. International Journal of Food Microbiology 76, Hadden, R.D.M. and Gregson, N.A. (2001) Guillain-Barré syndrome and Campylobacter jejuni infections. Journal of Applied Microbiology 90, 145S 154S. Hoffman, P.S., George, H.A., Krieg, N.R. and Smibert, R.M. (1979) Studies of the microaerophilic nature of Campylobacter fetus subsp. jejuni. II. Role of exogenous superoxoide anions and hydrogen peroxide. Canadian Journal of Microbiology 25, Jones, D.M., Sutcliffe, E.M. and Curry, A. (1991) Recovery of viable but non-culturablecampylobacter jejuni. Journal of General Microbiology 137, Lee, M-H.T., Smibert, R.M. and Krieg, N. R. (1988) Effect of incubation temperature, ageing, and bisulfite content of unsupplemented brucella agar on aerotolerance of Campylobacter jejuni. Canadian Journal of Microbiology 34, Luechtefeld, N.W., Wang, W.-L.L., Blaser, M.J. and Reller, L.B. (1981) Evaluation of transport and storage techniques for isolation of Campylobacter fetus subsp. jejuni from turkey cecal specimens. Journal of Clinical Microbiology 13, Malik, K.A. and Lang, E. (1996) Successful preservation of Campylobacteraceae and related bacteria by liquid-drying under anaerobic conditions. Journal of Microbiological Methods 25, Mills, C.K. and Gherna, R.L. (1988) Cryopreservation studies of campylobacter. Cryobiology 25, Park, R.W.A., Griffiths, P.L. and Moreno, G.S. (1991) Sources and survival of campylobacters: relevance to enteritis and the food industry. Journal of Applied Bacteriology Symposium 70(Suppl.), 97S 106S. Rogol, M., Schnaidman, B., Katzenelson, E. and Sechter, I. (1990) Improved medium for storage and transportation of thermophilic campylobacters. European Journal of Clinical Microbiology and Infectious Diseases 9, Saha, S.K. and Sanyal, S.C. (1991) Better preservation of Campylobacter jejuni/camp. coli in a defined medium. Indian Journal of Medical Research 93, Tran, T.T. (1998) A blood-free enrichment medium for growing Campylobacter spp. under aerobic conditions. Letters in Applied Microbiology 26, Wang, W.-L.L., Luechtefeld, N.W., Reller, L.B. and Blaser, M.J. (1980) Enriched brucella medium for storage and transport of cultures of Campylobacter fetus subsp. jejuni. Journal of Clinical Microbiology 12, White, D.J. and Sands, R.L. (1985) Storage of bacteria at )76 C. Medical Laboratory Sciences 42, Whyte, D. and Igoe, D. (1999) Interim report on Campylobacter enteritis in Ireland Dublin, Ireland: National Disease Surveillance Centre, Sir Patrick Dun s Hospital,
466 Biomed Environ Sci, 2014; 27(6):
466 Biomed Environ Sci, 2014; 27(6): 466-470 Letter to the Editor Modification and Evaluation of Brucella Broth Based Campylobacter jejuni Transport Medium * BAI Yao 1,2,$, CUI Sheng Hui 3,$, XU Xiao 3,
More informationComparison of Atmospheres of Incubation for Primary
JOURNAL OF CLINICAL MICROBIOLOGY, Jan. 1982, p. 53-57 0095-1137/82/010053-05$02.00/0 Vol. 15, No.1 Comparison of Atmospheres of Incubation for Primary Isolation of Campylobacter fetus subsp. jejuni from
More informationSurvival and Growth of Campylobacter fetus subsp. jejuni on Meat and in Cooked Foods
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Aug. 192, p. 259-263 99-224/2/259-5$2./ Vol. 44, No. 2 Survival and Growth of Campylobacter fetus subsp. jejuni on Meat and in Cooked Foods C.. GILL* AND LYNDA M.
More informationS. aureus NCTC 6571, E. coli NCTC (antibiotic
ISO Sensitivity Test Agar Code: KM1204 A semi-defined nutritionally rich sensitivity medium. It is composed of specially selected peptones with a small amount of glucose, solidified with a very pure agar
More informationApplication of a new phagetyping scheme to campylobacters isolated during outbreaks
Epidemiol. Infect. (199), 14, 45-411 45 Printed in Great Britain Application of a new phagetyping scheme to campylobacters isolated during outbreaks S. M. SALAMA, F. J. BOLTON* AND D. N. HUTCHINSON Public
More informationCampylobacter Antigen ELISA Kit
Campylobacter Antigen ELISA Kit Catalog Number KA3204 96 assays Version: 01 Intended for research use only www.abnova.com Table of Contents Introduction... 3 Intended Use... 3 Background... 3 Principle
More informationrequirements of thermophilic campylobacters
J Clin Pathol 1983;36:829-834 A study of the oxygen and carbon dioxide requirements of thermophilic campylobacters FJ BOLTON, D COATES From the Public Health Laboratory, Preston Infirmary, Meadow Street,
More informationProper steps for bull semen dilution and freezing. IMV Technologies France
Proper steps for bull semen dilution and freezing IMV Technologies France Introduction Since Polge reported the first successful cryopreservation of spermatozoa in 1949, spermatozoa from many mammalian
More informationResponse of Campylobacter jejuni to Sodium Chloride
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Mar. 1982, p. 561-565 Vol. 43, No. 3 0099-2240/82/030561-05$02.00/0 Response of Campylobacter jejuni to Sodium Chloride MICHAEL P. DOYLE* AND DEBRA J. ROMAN Food
More informationSurvival of Aerobic and Anaerobic Bacteria in
APPLIED MICROBIOLOGY, Mar. 1968, p. 445-449 Copyright 1968 American Society for Microbiology Vol. 16, No. 3 Printed in U.S.A. Survival of Aerobic and Anaerobic Bacteria in Chicken Meat During Freeze-Dehydration,
More informationA Nordic standard procedure for detection and enumeration of thermotolerant Campylobacter in foods
A Nordic standard procedure for detection and enumeration of thermotolerant Campylobacter in foods Results of a collaborative study on NMKL* 119, rev. *Nordic Committee on Food Analysis Aim To develop
More informationMicrobiological Methods V-A- 1 SALMONELLA SPECIES PRESUMPTIVE AND CONFIRMATION TESTS
Microbiological Methods V-A- 1 PRESUMPTIVE AND CONFIRMATION TESTS PRINCIPLE SCOPE Enrichment and selective procedures are used to provide a reasonably sensitive, definitive and versatile means of qualitatively
More informationBiological Consulting Services
Biological Consulting Services of North Florida/ Inc. May 13, 2009 Aphex BioCleanse Systems, Inc. Dear Sirs, We have completed antimicrobial efficacy study on the supplied Multi-Purpose Solution. The testing
More informationIsolation and Enumeration of Campylobacter jejuni from
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Nov. 1983, p. 1097-1102 0099-2240/83/111097-06$02.00/0 Copyright 1983, American Society for Microbiology Vol. 46, No. 5 Isolation and Enumeration of Campylobacter
More informationWhat is Campylobacter?
The Society of Hygiene and Technology What is Campylobacter? Campylobacter species cause more reported cases of food-borne diarrhoea in the UK and Europe than any other bacteria, including Salmonella.
More informationLaboratory Protocol. November 2017 Version 3. Henrik Hasman, Yvonne Agersø and Lina M Cavaco (DTU Food)
Laboratory Protocol Validation of selective MacConkey agar plates supplemented with 1 mg/l cefotaxime for monitoring of ESBL- and AmpCproducing E. coli in meat and caecal samples November 2017 Version
More informationMicrobial load and prevalence of pathogens on surface of fresh vegetables in local market yards across Junagadh district of Gujarat
International Journal of Plant Protection Volume 5 Issue 1 April, 2012 84-88 Research Article IJPP Microbial load and prevalence of pathogens on surface of fresh vegetables in local market yards across
More informationProduct Use HPSC-CC are for research use only. It is not approved for human or animal use, or for application in in vitro diagnostic procedures.
HPSC-derived Cardiomyocyte Cells (HPSC-CC) Catalog #6240 Cell Specification Human primary cardiomyocytes and cardiac tissue are superior modeling systems for heart disease studies, drug discovery and toxicity
More informationLaboratorios CONDA, S.A. Distributed by Separations
Culture Media as on Pharmacopoeia 7.3, Harmonized Method for Microbiological Examination of non sterile products -FORMULATIONS Buffered sodium chloride-peptone solution ph 7.0 Cat. Nº 1401 Potassium dihydrogen
More informationA new selective blood agar medium for Streptococcus pyogenes and other haemolytic streptococci
J. clin. Path. (1964), 17, 231 A new selective blood agar medium for Streptococcus pyogenes and other haemolytic streptococci E. J. L. LOWBURY, A. KIDSON, AND H. A. LILLY From the Medical Research Council
More informationFigure 1. Bacterial growth curve.
INTRODUCTION In order for suitable growth and division, a microorganism must be placed into a favorable environment. Bacterial growth refers to an increase in cell number rather than cell size. Bacteria
More informationRing test No Detection and enumeration of Campylobacter spp. in broiler meat
EU-RL- Campylobacter Ring test No 7 2010 Detection and enumeration of Campylobacter spp. in broiler meat Ingrid Hansson, EU-RL Campylobacter Ring test No 7 April 2010 The ring test involved: Detection
More informationEnhanced Recovery of Injured Escherichia coli by Compounds That Degrade Hydrogen Peroxide or Block Its Formation
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Feb. 1983, p. 360-365 Vol. 45, No. 2 0099-2240/83/020360-06$02.00/0 Copyright C 1983, American Society for Microbiology Enhanced Recovery of Injured Escherichia
More informationRecipes for Media and Solution Preparation SC-ura/Glucose Agar Dishes (20mL/dish, enough for 8 clones)
Protocol: 300 ml Yeast culture preparation Equipment and Reagents needed: Autoclaved toothpicks Shaker Incubator set at 30 C Incubator set at 30 C 60 mm 2 sterile petri dishes Autoclaved glass test tubes
More informationHuman Induced Plutipotent Stem Cell (ipsc) Handling Protocols: Matrigel and mtesr/e8 Media
General Guidelines for Handling Human ipsc cells ipsc are cryopreserved in plastic cryovials and shipped on dry ice. If storing the ipsc before thawing, store in liquid nitrogen vapor. Storage directly
More informationHARMONISED PHARMACOPOEIA DEHYDRATED CULTURE MEDIA FOR SUPPORTING REGULATORY COMPLIANCE AVAILABLE NOW P O RTF O LIO.
DEHYDRATED CULTURE MEDIA FOR ENHANCED P O RTF O LIO AVAILABLE NOW HARMONISED PHARMACOPOEIA SUPPORTING REGULATORY COMPLIANCE A Neogen Company THE GATEWAY TO MICROBIOLOGY INTRODUCTION Harmonised Pharmacopoeia;
More informationTo place an order, please visit lifelinecelltech.com or call customer service at
Human Melanocyte Cells Instruction Manual HEMn Human Epidermal Melanocytes, Neonatal HEMn-HP Human Epidermal Melanocytes, Neonatal-Highly Pigmented HEMa Human Epidermal Melanocytes, Adult HEMa-HP Human
More informationMicrobiology Lab Microbial Growth: Environmental Factors
Microbiology Lab Microbial Growth: Environmental Factors Ex. 2-7: Oxygen Requirements: Effects on Growth A. Bacteria may use oxygen as part of the cellular respiration. Cellular respiration is the process
More informationSCREENING LACTIC ACID BACTERIA FOR ANTIMICROBIAL COMPOUND PRODUCTION K. KHALISANNI, K. LEE HUNG
SCREENING LACTIC ACID BACTERIA FOR ANTIMICROBIAL COMPOUND PRODUCTION K. KHALISANNI, K. LEE HUNG Department of Microbiology, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam,
More informationAntibacterial activity and mechanism of ZnO nanoparticles on C. jejuni
Antibacterial activity and mechanism of ZnO nanoparticles on C. jejuni Yiping He Yanping Xie Molecular Characterization of Foodborne Pathogens Research Unit, USDA-ARS ZnO It is stable under high temperatures
More informationNorovirus Report. Can copper and silver ionisation kill norovirus? A Study Report
Norovirus Report Can copper and silver ionisation kill norovirus? A Study Report Can copper and silver ionisation kill norovirus? A Study Report Introduction Norovirus is the leading cause of non-bacterial
More informationMt. San Antonio College Microbiology 22 Lab Schedule for Spring 2018 Mon/Weds. Split Lab Sections ONLY
Mt. San Antonio College Microbiology 22 Lab Schedule for Spring 2018 Mon/ Split Lab Sections ONLY Wk 1 Feb. 26 Orientation with Introductions & Safety Rules/Regulations Feb. 28 Orientation with Pathogen
More informationMt. San Antonio College Microbiology 22 Lab Schedule for Spring 2018 Tues/Thurs. Split Lab Sections ONLY
Mt. San Antonio College Microbiology 22 Lab Schedule for Spring 2018 Tues/ Split Lab Sections ONLY Wk 1 Feb. 27 Orientation with Introductions & Safety Rules/Regulations March 1 Orientation with Pathogen
More informationMt. San Antonio College Microbiology 22 Lab Schedule for Fall 2017 Tues/Thurs. Split Lab Sections ONLY
Mt. San Antonio College Microbiology 22 Lab Schedule for Fall 2017 Tues/ Split Lab Sections ONLY Wk 1 Aug. 29 Orientation with Introductions & Safety Rules/Regulations Aug. 31 Orientation with Pathogen
More informationASSESMENT OF CRYOPRESERVATION SYSTEMS INFLUENCE ON THE SURVAVIAL OF E. COLI RECOMBINANT STRAINS
Lucrări ştiinńifice Zootehnie şi Biotehnologii, vol. 41(1) (2008), Timişoara ASSESMENT OF CRYOPRESERVATION SYSTEMS INFLUENCE ON THE SURVAVIAL OF E. COLI RECOMBINANT STRAINS TESTAREA INFLUENłEI SISTEMELOR
More informationWeds. Date. Aug. 26. Sept. 2
Mt.SanAntonioCollege Microbiology 22 Lab Schedule for Fall 2015 Mon./ Split Lab Sections ONLY Wk. Mon. 1 Aug. 24 Orientation with Introductions & Safety Rules/Regulations 2 Aug. 31 Exercise #1: The Microscope
More informationCampylobacter biotyping scheme of epidemiological
J Clin Pathol 1984;37:677-681 Campylobacter biotyping scheme of epidemiological value FJ BOLTON, AV HOLT, DN HUTCHINSON From the Public Health Laboratory, Preston Infirmary, Preston, Lancashire PRI 6RS
More informationNINDS Repository Human Induced Pluripotent Stem Cell (ipsc) Handling Protocols (Matrigel and mtesr Media)
General Guidelines for Handling Human ipsc cells ipsc are cryopreserved in plastic cryovials and shipped on dry ice. If storing the ipsc before thawing, store in liquid nitrogen vapor. Storage directly
More informationMedia Fill Test Kits. Manufactured by. Making USP <797> compliance easy!
Media Fill Test Kits Manufactured by Making USP compliance easy! Compliance was never so easy! Microbial Contamination Testing for CSPs Hardy Diagnostics offers all the products you need to easily
More informationIn-vitro analysis of the microbial-load in raw meat and finished products
ISSN: 2319-7706 Volume 3 Number 12 (2014) pp. 643-648 http://www.ijcmas.com Original Research Article In-vitro analysis of the microbial-load in raw meat and finished products M. P.Prasad* Department of
More informationInfluence of Different Prebiotics and Probiotics on Selective Intestinal Pathogens
ISSN: 2319-7706 Volume 3 Number 10 (2014) pp. 657-663 http://www.ijcmas.com Original Research Article Influence of Different Prebiotics and Probiotics on Selective Intestinal Pathogens Anayata Sharma 1*
More informationResearch Concerning Use of Long-Term Preservation Techniques for Microorganisms
Research Concerning Use of Long-Term Preservation Techniques for Microorganisms Adriana Criste 1, Mihaela Giuburuncă 1, Octavian Negrea 1, Sorin Dan 2, Marius Zăhan 1 1 Faculty of Animal Science and Biotechnologies,
More information320 MBIO Microbial Diagnosis. Aljawharah F. Alabbad Noorah A. Alkubaisi 2017
320 MBIO Microbial Diagnosis Aljawharah F. Alabbad Noorah A. Alkubaisi 2017 Pathogens of the Urinary tract The urinary system is composed of organs that regulate the chemical composition and volume of
More informationOrderly increase in all the chemical structures of the cell. Cell multiplication. Increase in the number of the cells
GROWTH OF BACTERIA Growth Orderly increase in all the chemical structures of the cell Cell multiplication Increase in the number of the cells In natural habitat In or on another organism (infection) In
More informationPhases of the bacterial growth:
L3: Physiology of Bacteria: Bacterial growth Growth is the orderly increase in the sum of all the components of an organism. Cell multiplication is a consequence of growth, in unicellular organism, growth
More informationNew York Science Journal, Volume 1, Issue 1, January 1, 2008, ISSN Amides as antimicrobial agents.
Amides as antimicrobial agents Raymond C.Jagessar 1 *, Davendra Rampersaud 2 * 1 Lecturer, Department of Chemistry, University of Guyana, South America 2 Microbiologist, St. Joseph Mercy hospital, Parade
More informationRifampin Resistance. Charlottesville, Virginia i0w organisms in Trypticase soy broth (BBL Microbiology
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY, Apr. 1980, p. 658-662 0066-4804/80/04-0658/05$02.00/0 Vol. 17, No. 14 Treatment of Experimental Staphylococcal Infections: Effect of Rifampin Alone and in Combination
More informationAntimicrobial activity of Karuveppilai vadagam against Enteric pathogens
International Journal of Current Research in Medical Sciences ISSN: 2454-5716 P-ISJN: A4372-3064, E -ISJN: A4372-3061 www.ijcrims.com Original Research Article Volume 4, Issue 6-2018 Antimicrobial activity
More informationChapter 6. Microbial Nutrition and Growth
Chapter 6 Microbial Nutrition and Growth Growth Requirements Microbial growth Increase in a population of microbes Due to reproduction of individual microbes Result of microbial growth is discrete colony
More informationTHE PROLONGED SURVIVAL OF UPPER RESPIRATORY TRACT AND INTESTINAL PATHOGENS ON SWABS
J. clin. Path. (1957), 10, 226. THE PROLONGED SURVIVAL OF UPPER RESPIRATORY TRACT AND INTESTINAL PATHOGENS ON SWABS BY From the Public Health LaboratorY, School of Bacteriology, University of Melbournte,
More informationLecture 3. Microbial Physiology
Micro-Biology For 3 rd Sem. Students of ISM-IUK, Bishkek Lecture 3 Microbial Physiology LECTURE OBJECTIVES 1. Bacterial Growth 2. Growth Requirements 3. Nutritional types of microorganisms 4. Enzymes,
More informationThe composition can be adjusted / supplemented in order to achieve optimal performance.
TECHNICAL DATA SHEET OXFORD AGAR DETECTION OF LISTERIA 1 INTENDED USE Oxford Agar is a selective medium used for the differentiation, the isolation and the enumeration of Listeria monocytogenes from milk
More informationNorovirus Surrogate Test Exposure to SixLog s ihp TM (ionized Hydrogen Peroxide) Decontamination Technology. Executive Summary:
Norovirus Surrogate Test Exposure to SixLog s ihp TM (ionized Hydrogen Peroxide) Decontamination Technology Executive Summary: The ihp TM decontamination technology was used to kill a human norovirus surrogate
More informationStandard Operating Procedure
Standard Operating Procedure Section: Laboratory Version No # 11 Initials: AD Title: 25 Nasopharyngeal Culture Revision Date: 12 Sep 2011 1 Definitions 11 NPS = Nasopharyngeal Swab 12 STGG: Skim milk tryptone
More informationEvaluation of the feasibility of the VACUETTE Urine CCM tube for microbial testing of urine samples
Evaluation of the feasibility of the VACUETTE Urine CCM tube for microbial testing of urine samples Background The VACUETTE Urine CCM tube is for the collection, transport and storage of urine samples
More informationThis chapter provides tests for the estimation of the numble, a suitable, validated adaptation of a procedure set forth
USP 35 Dietary Supplements / 2021 Microbial Enumeration Tests 955 Dietary Supplements General Chapters Information cessitates a modification of the procedure by (1) an increase INTRODUCTION 2021 MICROBIAL
More informationA Change in the Contagious Character of a Strain of Swine Influenza
SWINE INFLUENZA V. STUDIES ON CONTAGION BY RICHARD E. SHOPE, M.D. (From the Department of Animal and Plant Pathology of The Rockefeller Institute for Medical Research, Princeton, N. J.) (Received for publication,
More informationGrowth Capacity of Thermotolerant Campylobacters in Culture Media Supplemented with Pig and Cow Blood
1087 Vol.53, n. 5: pp.1087-1091, September-October 2010 ISSN 1516-8913 Printed in Brazil BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY A N I N T E R N A T I O N A L J O U R N A L Growth Capacity of Thermotolerant
More informationBACTERIAL EXAMINATION OF WATER
BACTERIAL EXAMINATION OF WATER The bacteriological examination of water is performed routinely by water utilities and many governmental agencies to ensure a safe supply of water for drinking, bathing,
More informationMouse Hepatic Progenitor Organoid Culture: Supplementary Protocols
TECHNICAL BULLETIN Mouse Hepatic Progenitor Organoid Culture: The following are supplementary protocols for the culture of hepatic organoids with HepatiCult Organoid Growth Medium (Mouse) (Catalog #06030).
More informationMALDI-TOF Mass Spectrometry: A New Rapid ID Method in Clinical Microbiology
MALDI-TOF Mass Spectrometry: A New Rapid ID Method in Clinical Microbiology Patrick R. Murray, PhD WW Director, Scientific Affairs BD Diagnostic Systems Outline MALDI-TOF is the most important innovation
More informationPNEUMOCOCCUS VALENT LATEX KIT
PNEUMOCOCCUS 7-10-13-VALENT LATEX KIT Latex particles coated with pneumococcal antiserum raised in rabbits for in vitro diagnostic use Application The Pneumococcus 7-10-13-valent Latex Kit is a ready to
More informationReport on susceptibility of Salmonella serotypes in Belgium Vicky Jasson
CODA-CERVA Report on susceptibility of Salmonella serotypes in Belgium 2014. Vicky Jasson Veterinary and Agrochemical Research Centre 1 Introduction Salmonella is one of the most important bacterial zoonotic
More informationBACTERIAL GROWTH. FYBSc.
BACTERIAL GROWTH FYBSc. Bacterial growth Binary fission Generation time Phases of growth 4-2 Binary fission 1. Prokaryote cells grow by increasing in cell number (as opposed to increasing in size). 2.
More informationAPPLICATION Detection and isolation of pathogenic intestinal bacteria including Shigella and Salmonella from surfaces, food, or liquid samples.
HEK/SS Code 5543 COMING SOON! BioPaddles Colony Identification App Hektoen Enteric Agar (HEK) Salmonella Shigella Agar (SS) USE: Detection and isolation of pathogenic intestinal bacteria including Shigella
More informationProduct Size Catalog Number. 500,000 proliferating cells. cryopreserved cells that have been thawed and cultured for three days at PromoCell.
Cardiac Myocytes Instruction Manual Product Size Catalog Number Human Cardiac Myocytes (HCM) 500,000 cryopreserved cells 500,000 proliferating cells C-12810 C-12811 Product Description Cardiac muscle,
More informationThe effectiveness of hygiene procedures for prevention of cross-contamination from chicken carcases in the domestic kitchen
Letters in Applied Microbiology 1999, 29, 354 358 The effectiveness of hygiene procedures for prevention of cross-contamination from chicken carcases in the domestic kitchen T.A. Cogan, S.F. Bloomfield
More informationAntimicrobial effects of Pseudomonas aeruginosa on survival of Campylobacter jejuni on poultry meat
Antimicrobial effects of Pseudomonas aeruginosa on survival of Campylobacter jejuni on poultry meat D.E. CONNER*, M.A. DAVIS and M.L.P. TAM Department of Poultry Science Poultry Products Safety and Quality
More informationSimpson (1928), Julianelle (1937), Thompson and Khorazo. that the pathogenic strains, (Staphylococcus aureus and Staphylococcus
THE RELATION OF AEROBIOSIS TO THE FERMENTATION OF MANNITOL BY STAPHYLOCOCCI EUGENIA VALENTINE COLWELL Laboratory of Industrial Hygiene Inc., New York City Received for publication August 5, 1938 While
More informationGB Translated English of Chinese Standard: GB NATIONAL STANDARD OF THE
Translated English of Chinese Standard: GB4789.30-2016 www.chinesestandard.net Buy True-PDF Auto-delivery. Sales@ChineseStandard.net GB NATIONAL STANDARD OF THE PEOPLE S REPUBLIC OF CHINA GB 4789.30-2016
More informationRapid-VIDITEST. Helicobacter pylori. One step Helicobacter pylori Blister test. Instruction manual
Rapid-VIDITEST Helicobacter pylori One step Helicobacter pylori Blister test. Instruction manual Producer: VIDIA spol. s r.o., Nad Safinou II 365, 252 50 Vestec, Czech Republic, Tel.: +420 261 090 565,
More informationIsolation and Biochemical Characterization of Lactobacillus species Isolated from Dahi
International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 5 Number 4 (2016) pp. 1042-1049 Journal homepage: http://www.ijcmas.com Original Research Article http://dx.doi.org/10.20546/ijcmas.2016.504.119
More informationRISK ASSESSMENT CAMPYLOBACTER INFECTION TRANSMISSION FROM PIGS TO MAN USING ERYTHROMYCIN RESISTANCE AS A MARKER
RISK ASSESSMENT CAMPYLOBACTER INFECTION TRANSMISSION FROM PIGS TO MAN USING ERYTHROMYCIN RESISTANCE AS A MARKER D.G.S. BURCH Octagon Services Ltd, Old Windsor, Berks. SL4 2NR The Pig Journal (2002) 50,
More informationAntimicrobial effects of pine essential oil against Listeria monocytogenes
University of Arkansas, Fayetteville ScholarWorks@UARK Biological and Agricultural Engineering Undergraduate Honors Theses Biological and Agricultural Engineering 5-2015 Antimicrobial effects of pine essential
More informationVolume 2, ISSN (Online), Published at:
INFLUENCE OF PROTECTORS ON PRESERVATION OF LAСTIC ACID MICROORGANISMS Karlygash M. Kebekbaeva (RSE "Institute of Microbiology and Virology" KH MES RK, Kazakhstan, Almaty) Abstract In this paper we studied
More informationPRESENTER: DENNIS NYACHAE MOSE KENYATTA UNIVERSITY
18/8/2016 SOURCES OF MICROBIAL CONTAMINANTS IN BIOSAFETY LABORATORIES IN KENYA PRESENTER: DENNIS NYACHAE MOSE KENYATTA UNIVERSITY 1 INTRODUCTION Contamination occurs through avoidable procedural errors
More informationBACTERIAL GROWTH. Refers to an increase in bacterial cell number (multiplication). Results from bacterial reproduction (binary fission)
BACTERIAL GROWTH Refers to an increase in bacterial cell number (multiplication). Results from bacterial reproduction (binary fission) parameter called generation time (the average time required for cell
More informationIndigenous fermented milk products: A microbiological study in Bhagalpur town
RESEARCH ARTICLE FOOD SCIENCE RESEARCH JOURNAL Volume 4 Issue 1 April, 2013 24-28 Indigenous fermented milk products: A microbiological study in Bhagalpur town A.R. NIGAM, R.P. SAH AND MD. IRSHAD ALAM
More informationThe Action of Chloroform -killed Suspensions of Enteropathogenic Escherichia coli on Ligated Rabbit -gut Segments
J. gm. nghobioi. (i966), 4, 898 Printed in Great Britain 9 The Action of Chloroform killed Suspensions of Enteropathogenic Escherichia coli on Ligated Rabbit gut Segments BY JOAN TAYLOR AND K. A. BETTELHEIM
More informationGCSE Food Technology (AQA) Food safety and hygiene
GCSE Food Technology (AQA) Food safety and hygiene Food spoilage Food spoilage Food products can t be stored for a long time without changes taking place. The changes that often occur are to the taste,
More informationTrial Application of Bacterial Cellulose Membrane in Minimally Pre-Prepared Fresh Coconut
International Journal of Pharmaceutical Science Invention ISSN (Online): 2319 6718, ISSN (Print): 2319 670X Volume 6 Issue 4 April 2017 PP. 32-37 Trial Application of Bacterial Cellulose Membrane in Minimally
More informationCampylobacter spp. of hydrogenase in the various Campylobacter. species and on a new rapid test for distinguishing
JOURNAL OF CLINICAL MICROBIOLOGY, Oct. 1983, p. 825-829 0095-1137/83/100825-05$02.O0/O Copyright 1983, American Society for Microbiology Vol. 18, No. 4 Hydrogenase Activity in Catalase-Positive Strains
More informationANTIBACTERIAL TOOTHPASTE: DO NOT SWALLOW
ANTIBACTERIAL TOOTHPASTE: DO NOT SWALLOW Sarah McCuaig BACKGROUND, PURPOSE, HYPOTHESES Market statistics indicate a significant increase in the use of antibacterial products in North American households.
More informationCommunity acquired pneumonia due to Legionella pneumophila in a tertiary care hospital
101 Research article Community acquired pneumonia due to Legionella pneumophila in a tertiary care hospital Abstract BN Dissanayake 1,, DE Jayawardena 2, CG Senevirathna 1, TM Gamage 1 Sri Lankan Journal
More informationFollicle Dermal Papilla Cell
Follicle Dermal Papilla Cell Instruction Manual Product Size Catalog Number Human Follicle Dermal Papilla Cells (HFDPC) 500,000 cryopreserved cells 500,000 proliferating cells C-12071 C-12072 Product Description
More informationHydrogen Peroxide Influence on Microbial Survivorship. Jacob Cebulak Central Catholic Pittsburgh Grade 9
Hydrogen Peroxide Influence on Microbial Survivorship Jacob Cebulak Central Catholic Pittsburgh Grade 9 Problem Humans use excess hydrogen peroxide to clean wounds. The concentration used is often damaging
More informationThe Whitley Internal HEPA filtration system bacteriological testing
The Whitley Internal HEPA filtration system bacteriological testing Andrew Pridmore July 2014 Introduction As described in Technical Note HE03, Whitley Workstations equipped with our Whitley Internal HEPA
More informationFall (Section ) Nursing Microbiology Lab Syllabus. Office Hours/Location: Room: LS 342 (Sections ),
Fall 2016 2460 (Section- 002-005) Nursing Microbiology Lab Syllabus Graduate TA: Email: Office Hours/Location: Room: LS 342 (Sections 002-005), Class day & Time: Monday Thursday 2:00 4:50 p.m. Lab Manual:
More informationBacterial Metabolism & Growth Characteristics. Stijn van der Veen
Bacterial Metabolism & Growth Characteristics Stijn van der Veen Differentiating bacterial species Morphology (shape) Composition (cell envelope and other structures) Metabolism & growth characteristics
More informationStool bench. Cultures: SARAH
Stool bench The bacteria found in stool are representative of the bacteria that are present in the digestive system (gastrointestinal tract). Certain bacteria and fungi called normal flora inhabit everyone's
More informationExercise 15-B PHYSIOLOGICAL CHARACTERISTICS OF BACTERIA CONTINUED: AMINO ACID DECARBOXYLATION, CITRATE UTILIZATION, COAGULASE & CAMP TESTS
Exercise 15-B PHYSIOLOGICAL CHARACTERISTICS OF BACTERIA CONTINUED: AMINO ACID DECARBOXYLATION, CITRATE UTILIZATION, COAGULASE & CAMP TESTS Decarboxylation of Amino Acids and Amine Production The decarboxylation
More informationFor research or further manufacturing use only. Not for injection or diagnostic procedures.
PRIME-XV T cell Expansion XSFM PRIME-XV T Cell Expansion XSFM is a xeno-free, serum-free medium optimized for the activation and expansion of human T lymphocytes. This medium contains gentamicin and requires
More informationSurvival of Cold-Stressed Campylobacter jejuni on Ground Chicken and Chicken Skin during Frozen Storage
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Dec. 2004, p. 7103 7109 Vol. 70, No. 12 0099-2240/04/$08.00 0 DOI: 10.1128/AEM.70.12.7103 7109.2004 Survival of Cold-Stressed Campylobacter jejuni on Ground Chicken
More informationOfficial Journal of the European Union. (Non-legislative acts) REGULATIONS
24.8.2017 L 218/1 II (Non-legislative acts) REGULATIONS COMMISSION REGULATION (EU) 2017/1495 of 23 August 2017 amending Regulation (EC) No 2073/2005 as regards Campylobacter in broiler carcases (Text with
More informationMedical Microbiology
Lecture 5!!!!!!ƒš!!Œ!!! š!!œ!! Œ!!!! Dr. Ismail I. Daood Medical Microbiology!! Systematic Bacteriology Gram-Positive Cocci : GENUS : Staphylococcus : The general properties of Staphylococcus are Gram-
More informationHBeAg and HBeAg Ab ELISA Kit
HBeAg and HBeAg Ab ELISA Kit Catalog Number KA0290 96 assays Version: 17 Intended for research use only www.abnova.com Table of Contents Introduction... 3 Intended Use... 3 Principle of the Assay... 3
More informationRapid-VIDITEST Enterovirus
Rapid-VIDITEST Enterovirus A rapid one step Enterovirus Card test for the qualitative detection of Enterovirus antigens in human feces. Instruction manual Producer: VIDIA spol. s r.o., Nad Safinou II 365,
More informationFood Contamination and Spoilage Food Safety: Managing with the HACCP System Second Edition (245TXT or 245CIN)
Food Contamination and Spoilage Food Safety: Managing with the HACCP System Second Edition (245TXT or 245CIN) 2008, Educational Institute Competencies for Food Contamination and Spoilage 1. Distinguish
More informationFollicle Dermal Papilla Cells
Follicle Dermal Papilla Cells Instruction Manual Product Size Catalog Number Human Follicle Dermal Papilla Cells (HFDPC) 500,000 cryopreserved cells 500,000 proliferating cells C-12071 C-12072 Product
More information