from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Not decolorized by acid after staining, as bacteria that retain dye after an acid rinse.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Retaining stain when treated with an acidic solution.
from The Century Dictionary and Cyclopedia
- A literal translation of the German “säurfest”: applied to a class of bacteria which, when once stained with basic aniline dyes, tenaciously hold the dye on subsequent exposure to acids or alcohol.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. not easily decolorized by acid solutions; pertains to micro-organisms (especially the tubercle bacillus that causes tuberculosis)
Sorry, no etymologies found.
It belongs to that small group known as acid-fast bacteria.
(This often, but not invariably, removes the stain from acid-fast bacilli other than tubercle; e. g., smegma bacillus.) 7.
~ -- (To demonstrate tubercle and other acid-fast bacilli.) 1.
This method is supposed to differentiate between B. tuberculosis and other acid-fast micro-organisms.
It is a powerful oxidising agent and rapidly destroys most bacteria, but tubercle and other acid-fast organisms resist its lethal action for considerable periods, and upon this fact the method is based.
(This removes stain from everything but acid-fast bacilli; e. g., tubercle, leprosy, and smegma bacilli and the film turns yellow.) 5.
The contraption was also good enough to highlight the rod shaped morphology of the acid-fast aerobic bacteria.
The diagnosis of tuberculosis was based on a positive sputum smear for acid-fast bacilli.
Cryptosporidium oocysts (red) seen in a stool sample stained with an acid-fast stain CDC If you like this ...
Pulmonary TB was confirmed by two consecutive sputum smears positive for acid-fast bacilli and a positive culture; the smear and culture procedures were conducted as previously described