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Use the dichotomous key below to find a Gram-negative organism that is oxidase negative, does not produce acid from lactose,
O Micrococcus Lactobacillus Pseudomonas Streptococcus Salmonella Citrobacter Proteus Neisseria Staphylococcus Escherichia
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Answer #1

Ans - salmonella

Gram negative organism that is oxidase negative does not produce acid from lactose and is urease negative is salmonella.it is a genus of rod-shaped Gram-negative bacteria of the family Enterobacteriaceae.

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