Denoting bacteria that cannot be decolorized by an acid after staining, which is characteristic of the mycobacteria that cause tuberculosis and leprosy.
More example sentences
- Special stains were negative for acid-fast bacilli, fungal forms, Pneumocystis, and other bacteria.
- Cultures of right and left lung tissues were obtained for bacteria, acid-fast bacilli, and fungi.
- Special stains for fungus and acid-fast bacteria are negative, although culture is the more definitive diagnostic test.