Zenker solution is recommended for subsequent staining of which type of organism or stain?

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Multiple Choice

Zenker solution is recommended for subsequent staining of which type of organism or stain?

Explanation:
Zenker solution acts as a mercuric chloride–based fixative that preserves tissue morphology and the lipid-rich components of mycobacteria. Acid-fast bacilli staining relies on retaining the carbol fuchsin in organisms with mycolic acids, and fixing with Zenker helps maintain those structures so the stain resists decolorization with acid alcohol. Other stains—Gram, PAS, and Giemsa—have different fixation and preparation needs and are not optimized after Zenker fixation; mercurial fixatives can interfere with Gram reactions and aren’t the preferred preps for PAS or Giemsa. So the combination that best fits Zenker fixation is acid-fast staining to detect acid-fast organisms.

Zenker solution acts as a mercuric chloride–based fixative that preserves tissue morphology and the lipid-rich components of mycobacteria. Acid-fast bacilli staining relies on retaining the carbol fuchsin in organisms with mycolic acids, and fixing with Zenker helps maintain those structures so the stain resists decolorization with acid alcohol. Other stains—Gram, PAS, and Giemsa—have different fixation and preparation needs and are not optimized after Zenker fixation; mercurial fixatives can interfere with Gram reactions and aren’t the preferred preps for PAS or Giemsa. So the combination that best fits Zenker fixation is acid-fast staining to detect acid-fast organisms.

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