The results of identification of Mycobacterium non-tuberculosis isolated in the North-West Region of the Russian Federation, which have been obtained in the past 20 years, are presented. The identification was made by bacteriological and biochemical studies. M. avium-intracellulare complex is the man causative agent of mycobacteriosis. The currently available methods of chromatography and molecular genetics, which are designed for accelerated detection and species-specific identification of Mycobacterium, are briefly reviewed.
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