American Society of Microbiology ABMM ABMM Question # 53 Topic 1 Discussion

American Society of Microbiology ABMM ABMM Question # 53 Topic 1 Discussion

ABMM Exam Topic 1 Question 53 Discussion:
Question #: 53
Topic #: 1

A clinical microbiology laboratory is performing Gram staining on a sputum sample. After adding the crystal violet stain, a delay in the washing step with decolorizer (alcohol-acetone) would MOST likely result in:


A.

Poor adherence of the stain to Gram-positive bacteria.


B.

Gram-negative bacteria appearing purple.


C.

Gram-positive bacteria appearing pink.


D.

Increased background staining.


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