Comprehensive approach to identification of serovars of Mycobacterium avium complex

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Abstract
Serotyping of nontuberculous mycobacteria, especially those of the Mycobacterium avium complex, provides important epidemiological information, particularly in tracing origins of infections. Seroagglutination with whole cells and polyclonal rabbit antibodies was the original way of identifying serovars and is still commonly used. The discovery of the glycolipid nature of the typing antigens allows differentiation of serovars on the basis of thin-layer chromatography of whole antigens and gas chromatography-mass spectrometry of the characteristic sugars of the oligosaccharide haptens of these antigens. In particular, the generation of monoclonal antibodies to the glycolipid antigens allows facile differentiation of serovars through enzyme-linked immunosorbent assay. All of these protocols were applied in developing a comprehensive approach to the typing of members of the M. avium complex.

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