acid-fast

(redirected from Acid-fast bacilli)
Also found in: Dictionary, Thesaurus, Wikipedia.

acid-fast

 [as´id-fast]
not readily decolorized by acids after staining; said of bacteria, especially Mycobacterium tuberculosis.

ac·id-fast

(as'id-fast),
Denoting bacteria that are not decolorized by acid-alcohol after having been stained with dyes such as basic fuchsin; for example, the mycobacteria and nocardiae.

acid-fast

(as´id-fast) not readily decolorized by acids after staining.

acid-fast

(ăs′ĭd-făst′)
adj.
Not decolorized by acid after staining, as bacteria that retain dye after an acid rinse.

ac′id-fast′ness n.

ac·id-fast

(as'id-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 a few nocardiae.

acid-fast

bacteria that retain acidic microbiological stains

ac·id-fast

(as'id-fast)
Denoting bacteria that are not decolorized by acid-alcohol after having been stained with dyes such as basic fuchsin.

acid-fast

1. not readily decolorized by acids after staining; said of bacteria, especially Mycobacterium spp.
2. stain demonstrating this characteristic. See also Ziehl-Neelsen stain.

modified acid-fast bacteria
resist decolorization by mild acid solutions; includes Brucella and Nocardia.
References in periodicals archive ?
Leprosy may be diagnosed clinically and, in the case of the lepromatous form, confirmed by demonstrating the presence of acid-fast bacilli in stained biopsies or scrapings of infected tissue (12).
The histochemical stain results for acid-fast bacilli (Ziehl-Neelsen) and fungi (Gomori methenamine-silver stain) were likewise negative.
Histological analysis revealed necrotising caseating granulomatous inflammation, and the Ziehl-Neelsen stain was positive for acid-fast bacilli.
Use of light emitting diodes fluorescence microscopy to detect acid-fast bacilli in sputum.
The ascitic fluid is exudative with lymphocytosis, with a low incidence of acid-fast bacilli and positive cultures.
Stain of the centrifuged fluid pellet for acid-fast bacilli was qualitatively "very high," and culture grew 1.
In this nonrandom sample of 26 TB outbreaks in the United States during 2002-2011, we found that characteristics common among TB cases that started outbreaks included pulmonary TB smear-positive for acid-fast bacilli, patient substance abuse, and prolonged infectious periods.
A fifth urine test for acid-fast bacilli on day 11 yielded a positive result.
Sputum samples were now positive for acid-fast bacilli.
Background & objectives: Sputum acid-fast bacilli (AFB) microscopy services are not available in all health facilities.
During this admission, he was diagnosed as having tuberculosis (TB), based on acid-fast bacilli (AFB)-positive gastric washings, and he was commenced on TB therapy.
Two sputa samples taken at the day hospital had been direct smear-negative for acid-fast bacilli (AFBs).