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Acid-Fast Bacteria

   Also found in: Acronyms 0.01 sec.
acid-fast bacteria [′as·əd ¦fast bak′tir·ē·ə]
(microbiology)
Bacteria, especially mycobacteria, that stain with basic dyes and fluorochromes and resist decoloration by acid solutions.
Acid-Fast Bacteria 

species of bacteria whose cells are not decolorized by sulfuric acid when stained with carbolfuchsin, owing to the chemical composition of the bacterial cells. The optimal reaction of the culture medium for growing acid-fast bacteria is not acid but neutral. Among acid-fast bacteria are several species of Mycobacterium, including pathogenic ones causing leprosy and tuberculosis in both man and animals and some nitrogen-fixing bacteria found in the soil.
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On all patients' clinical examinations, chest radiographs, sputum smears for staining of acid-fast bacteria, HIV testing, and culturing of Mycobacterium tuberculosis complex strains were performed.
Mycobacterium tuberculosis drug resistance, Ghana by Ruesch-Gerdes, Sabine / Emerging Infectious Diseases
They then found acid-fast bacteria -- which turn the same color as tuberculosis bacteria when exposed to a particular stain -- in lesions on the spinal column of a pre-Columbian child.
Pre-Columbian mummy lays TB debate to rest by Christensen, Damaris / Science News
Biopsy specimens were negative for acid-fast bacteria and mycobacterial growth (again, different solid and liquid media, extended incubation periods).
"Mycobacterium tilburgii" infections by Schouls, Leo M. / Emerging Infectious Diseases
 
 
 
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