acid-fast stain

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Special staining solution such as Ziehl-Neelsen stain that is used to detect the presence of mycobacteria, such as Mycobacterium tuberculosis, in sputum, other body fluids, or tissues; called acid-fast stain because the stain is taken up by the capsule of the microorganism and retains its color when washed in a weak solution of hydrochloric or other acid.

Subjects: Public Health and Epidemiology.

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