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Neogen
Neogen Vogel-Johnson nutrient, 500g
Vogel Johnson Agar is used for the isolation of staphylococci in a laboratory setting. Vogel Johnson Agar is not intended for use in the diagnosis of disease or other conditions in humans. Coagulase-positive staphylococci, primarily Staphylococcus aureus, are among the microorganisms that cause spoilage or chemical changes in cosmetic products. To isolate coagulase-positive, mannitol fermenting staphylococci, Vogel and Johnson modified Tellurite-Glycine Agar by Zebovitz, Evans, and Niven. The modification included increasing mannitol and adding a pH indicator. Vogel Johnson Agar selects and differentiates coagulase-positive staphylococci that ferment mannitol and reduce tellurite. Vogel Johnson (VJ) Agar is specified in standard methods testing for cosmetics and nutritional supplements.Meer tonen
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