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Before staining, a specimen is attached to the slide by heating or by chemical treatment. That step is:

AFlotation
BFermentation
CFixation
DFiltration
Answer & Solution
Correct answer: C. Fixation
1. The sample must stay put. 2. Heat is the usual route. 3. It is fixation. _Source: OpenStax Microbiology, Chapter 2, How We See the Invisible World._
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