[Architectonic of the working myocardium fibers in pig cardiac ventricles].

Architecture of the working myocardium fibers in pig cardiac ventricles was studied using the method of layer-by-layer splitting of muscle bundles. It was shown that the muscle fiber bundles in both ventricles were arranged in three directions. Three layers of fibers were distinguished as superficial, middle and deep.

[Type-specific antibodies to hepatitis C virus in sera from patients with various hematologic diseases].

The reactivity of 100 sera taken from patients with different blood diseases and donors with respect to synthesized peptides in the variable area of protein NS4 of hepatitis C virus was studied. The presence of type-specific antibodies in the blood sera of patients with hepatitis C was shown. Two antigenic determinant corresponding to 1683-1705 and 1711-1732 amino acid residues in the protein area under study were detected.

[Immunodiagnosis of HIV infection in the transfusion service].

Enzyme immunoassay (EIA) is the basic method of the laboratory diagnosis of HIV-infection used as the first component of donors' screening. The possibility of nonspecific reactions presents a significant shortcoming of this method. An algorithm involving three stages has been elaborated to investigate donors for anti-HIV antibodies and to verify seropositive samples.