B-5 fixative is recommended for subsequent staining with which method?

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Multiple Choice

B-5 fixative is recommended for subsequent staining with which method?

Explanation:
Stain compatibility with the fixative is the key idea. B-5 fixative (Bouin’s solution, containing picric acid, formaldehyde, and acetic acid) preserves tissue morphology quickly and importantly maintains the lipid-rich cell walls of organisms like Mycobacteria. That preservation helps the carbol fuchsin dye penetrate and remain after the acid-alcohol decolorization used in acid-fast staining, giving a reliable, bright positive result. Other stains can be more sensitive to the picric-acid background or to how Bouin’s fixative interacts with their staining chemistry, making acid-fast staining the most consistently compatible choice with B-5 fixation.

Stain compatibility with the fixative is the key idea. B-5 fixative (Bouin’s solution, containing picric acid, formaldehyde, and acetic acid) preserves tissue morphology quickly and importantly maintains the lipid-rich cell walls of organisms like Mycobacteria. That preservation helps the carbol fuchsin dye penetrate and remain after the acid-alcohol decolorization used in acid-fast staining, giving a reliable, bright positive result. Other stains can be more sensitive to the picric-acid background or to how Bouin’s fixative interacts with their staining chemistry, making acid-fast staining the most consistently compatible choice with B-5 fixation.

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