The control section containing Coccidioides immitis shows very pale pink-stained organisms on the PAS stain. This is most likely the result of:

a) prolonged time in the Schiff reagent
b) inadequate time in the sulfurous rinse solution
c) too long in the running tap water
d) old or overused reagents


Ans: d) old or overused reagents

Biology & Microbiology

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