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Why is A positive VP test is almost never observed with a positive MR test?
Wiki User
∙ 15y ago
its obvious!! methyl red test tells us if the bacteria is using mixed acid fermentation process. if it is following it will show +ve.
vp test is used to detect whether acetotin is produced or not.if bacteria is using mixed acid fermentation process acetotin will not be produced. so our bacteria can be either mr +ve or vp -ve. or it can be both negative....it cant be both +ve
for further doubts ping me at sandeepdsensation@gmail.com
Wiki User
∙ 15y ago
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