[The use of immunoenzyme analysis and immunoblotting for the serological characterization of mycobacterial antigens].

The enzyme immunoassay and immunoblotting were used for the study of the serological activity of different mycobacterial antigens and the spectrum of antibodies to them in patients with different forms of tuberculosis and healthy persons. Antibodies in patients' sera were shown to bind antigens with different molecular weight. The level and spectrum of antibodies to purified protein fraction I made it possible to differentiate between patients with various forms of tuberculosis and healthy persons.

[The use of the microdot immunoenzyme method for determining antibodies to Mycobacterium tuberculosis antigens].

The microdot enzyme immunoassay (EIA) has been used for the determination of antibodies to M. tuberculosis protein fractions, crude antigenic preparations, PPD and old tuberculin in tuberculosis patients and healthy persons. Purified protein fractions have been found to possess the highest sensitivity and specificity in microdot EIA.

[Identification of Mycobacterium tuberculosis by the method of gas-liquid chromatography].

Gas-liquid chromatography was used to study the composition of fatty acids and hydrocarbons of different types of Mycobacteria, including M. tuberculosis, opportunistic Mycobacteria and acid-fast saprophytes. In terms of composition of fatty acids and hydrocarbons, clinical and laboratory strains of M.