acid-fast stain

acid-fast stain
a staining procedure for demonstrating acid-fast microorganisms; see auramine-rhodamine s., Fite method, Kinyoun staining method and Ziehl-Neelsen staining method at Stains and Staining Methods.

Medical dictionary. 2011.

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  • Acid-fast — Acid fastness is a physical property of some bacteria referring to their resistance to decolorization by acids during staining procedures.cite journal |author=Madison B |title=Application of stains in clinical microbiology |journal=Biotech… …   Wikipedia

  • acid-fast — Denoting bacteria that are not decolorized by acid alcohol after having been stained with dyes such as basic fuchsin; e.g., the mycobacteria and nocardiae. * * * acid fast as əd .fast adj not easily decolorized by acids (as when stained) used esp …   Medical dictionary

  • acid-fast — adj. 1) describing bacteria that have been stained and continue to hold the stain after treatment with an acidic solution. For example, tuberculosis bacteria are acid fast when stained with a carbol fuchsin preparation. 2) describing a stain that …   The new mediacal dictionary

  • acid-fast — adjective (histology) of bacteria that retain their stain when treated with an acidic solution …   Wiktionary

  • acid-fast bacillus — noun a class of rod shaped bacteria which, after being stained, retain the stain when treated with an acidic solution …   Wiktionary

  • Periodic acid-Schiff stain — Periodic acid Periodic acid Schiff (PAS) is a staining method used to detect glycogen and other polysaccharides in tissues. The reaction of periodic acid oxidizes the diol functional groups in glucose and other sugars, creating aldehydes that… …   Wikipedia

  • stain — 1. To discolor. 2. To color; to dye. 3. A discoloration. 4. A dye used in histologic and bacteriologic technique. 5. A procedure in which a dye or combination of dyes and reagents is used to color the constituents of cells and tissues. For… …   Medical dictionary

  • fast — 1. Durable; resistant to change; applied to stained microorganisms which cannot be decolorized. SEE ALSO: acid f.. 2. Not eating. [A.S. foest, firm, fixed] * * * ferment active solution therapy; Fitness, Arthritis and Seniors Trial; flowassisted …   Medical dictionary

  • -fast — 1. an adjective suffix meaning lasting , not fading , as in colourfast. 2. a suffix forming adjectives, usually hyphenated, that indicate that an organism, as a bacillus, is resistant to the stain removing or toxic action of a specified agent, as …  

  • Ziehl-Neelsen stain — The Ziehl Neelsen stain, also known as the acid fast stain, was first described by two German doctors; Franz Ziehl (1859 to 1926), a bacteriologist and Friedrich Neelsen (1854 to 1894), a pathologist. It is a special bacteriological stain used to …   Wikipedia

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