Acid fast bacilli

Acid-fast bacteria are microorganisms, which has expressed resistance to 5-10% sulfuric or hydrochloric acids, alkalis and alcohol. After staining acid-fast bacteria discolored acids with great difficulty because they contain fat and wax-like substance. The number of acid-fast bacilli are pathogens of tuberculosis, leprosy and some saprophytes. Cm. also Bacteria, Mycobacteria.