Acid-fast stain

Acid-fast stain definition

A staining process in which mycobacteria resist decolorization with acid alcohol. (Alcamo’s Fundamentals of Microbiology)

A property of Mycobacterium species; cells stained with basic fuchsin dye resist decolorization with acidic alcohol. (Brock Biology of Microorganisms)

A term referring to the property of mycobacteria to retain carbol fuchsin even in the presence of acid alcohol. The staining procedure is used to diagnose tuberculosis. (Foundation in Microbiology by Talaro and Chess)

A differential stain used to identify bacteria that are not decolorized by acid-alcohol. (Microbiology: An Introduction by Tortora, Funke, and Case)

A staining procedure that differentiates between bacteria based on their ability to retain a dye when washed with an acid alcohol solution. (Prescott’s Microbiology)