[Serological diagnosis of tuberculosis in children by using erythrocyte preparations].

The results of indirect hemagglutination with phosphatide and protein antigens in children with different manifestations of primary Tb infection point to a high diagnostic potential of the serological method. Specially designed and tested diagnostic preparations made of TB and BCG vaccine strain tuberculin can perfect the diagnosis of tuberculosis and determination of its activity. Employment of the erythrocytic diagnosticum with BCG tuberculin extends the potential of detecting postvaccinal complications in children immunized with BCG vaccine.

[Experience with the use of an immunoglobulin erythrocyte preparation for the early laboratory diagnosis of pseudotuberculosis].

An immunoglobulin erythrocytic preparation for the rapid detection of Yersinia pseudotuberculosis was developed. The preparation was shown to be specific and sufficiently sensitive (8 x 10(5) microbial cells/ml). The preparation was used for the examination of 102 patients; in 62 of these patients the diagnosis was confirmed by means of common laboratory and clinical methods.

[Clinico-immunologic aspects of the differential diagnosis of disseminated processes in the lungs].

The results of examination of 224 patients with newly detected disseminated processes in the lungs who were admitted for differential diagnosis are presented. Immunologic studies which include determination of the natural killer activity, neutrophil phagocytosis, a total number of T- and B-lymphocytes and synthesis of antituberculosis antibodies in the indirect hemagglutination reaction with three basic M. tuberculosis antigens (phosphatide, polysaccharide and tuberculin) proved to be of high diagnostic value.

[Serologic diagnosis of intestinal yersiniosis. The design of a stable erythrocyte preparation for the indirect hemagglutination reaction].

Nine types of erythrocyte diagnostica of serovars O3 and O9, differing in the methods of obtaining sensitins and the physical state of erythrocytes, were put on trial. The preparations were used for the titration of hyperimmune sera and blood sera obtained from about 500 healthy persons, 300 patients with Yersinia enteric infection and 300 patients with other diseases. Freeze-dried diagnostica, when compared with liquid ones, were found to be less sensitive, but more stable and specific.