Scattered patchy blue areas are seen on the Brown and Hopps gram stain although the decolorization step was prolonged. This is most likely the result of:

a) a section of uneven thickness
b) drying of the section during the procedure
c) inadequate mordanting of the section
d) overtreatment with acetone


Answer: b) drying of the section during the procedure

Biology & Microbiology

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