FIELD: biotechnology, medicine. SUBSTANCE: method involves isolation of mycobacteria from the infected tissues, their purification and gas-chromatography analysis of fatty acid methyl esters from the mycobacteria purified biomass. Method involves recording the prevailing peak of mycolic acid and peak of myristic acid. Ratio of these components is used as an index of preparation purity (mycobacteria biomass). Method ensures to detect the presence of tissue residues in biomass of the purified mycobacteria. EFFECT: improved method of analysis. 2 tbl
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