acid fast


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Related to acid fast: Acid fast bacilli

acid fast

Of a stained tissue or organism, retaining the stain even in the presence of acid. Acid-fastness is a feature of certain organisms, such as the tubercle bacillus Mycobacterium tuberculosis , that have wax and fat in their cell walls. The fact is used as an aid to identification.
References in periodicals archive ?
Zeihl-Neelson staining showing numerous acid fast bacilli (red colour).
Contract awarded for lot 1: 50 pcs catheter fr 16, straight, etc, lot 2: 3 pcs kelly pad, etc, lot 3: 1 unit bp apparatus, aneroid with floor stand and lot 4: 1 set acid fast stain set, et al
Because this genus is acid fast by the Ziehl-Neelsen method, laboratory workers and clinicians must be aware that AFB seen in pulmonary specimens from cystic fibrosis patients are not necessarily from the genus Mycobacterium and may be from the genus Segniliparus.
Special stains for acid fast bacilli and fungal organisms were negative.
The court order stipulates that SmithKline Beecham can continue to claim that Tums neutralizes stomach acid fast and starts to work faster than Pepcid AC based on clinical results.