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Vibrio cholerae oxidase test |
Colonies of Vibrio cholerae on blood agar. Cultivation 24 hours, at a temperature of 37°C. Positive oxidase test.
Beta-hemolytic colonies of Vibrio cholerae on blood agar
Oxidase test: in a positive reaction, the bacterial growth becomes dark purple within 10 seconds. Positive and negative controls should be tested at the same time. Organisms of the genera Vibrio, Neisseria, Campylobacter, Aeromonas, Plesiomonas, Pseudomonas, and Alcaligenes are all oxidase positive; all Enterobacteriaceae are oxidase negative.
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Microscopy:
Gram-negative, curved, non-spore-forming rods. |
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