FIELD: biotechnology.
SUBSTANCE: method of binding Mycobacteria and/or fragments of Mycobacteria is provided, which present in an aqueous liquid with the solid surface. The said liquid is added to a sufficient amount of a water soluble polymer in the presence of a solid surface to displace Mycobacteria and/or their fragments from the said liquid onto the solid surface. The surface may be provided in the form of a microsphere. The water-soluble polymer can be selected as, for example, dextran, polyethylene glycol, polyvinylpyrrolidone.
EFFECT: invention enables to implement binding to a solid surface of Mycobacteria and their fragments that are not precipitated under conditions of centrifugation.
19 cl, 11 ex
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