Why can't direct microscopy be used to provide a presumptive identification of the enteric bacteria?
A) Some members of the genus Gram stain weakly.
B) The microscopic characteristics are indistinguishable from other gram-negative bacteria
C) Some members of the genus do not decolorize well and appear gram positive.
D) Some members have very thick capsules, and these do not allow the penetration of the Gram stain.
Correct Answer:
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