[Immunobiological properties of bacteria].

Opsonins found on the surface of microbial cells in vivo and ex vivo are characterized. The possibility of their visualization by immune electron and fluorescent microscopy has been demonstrated. Opsonins are shown to play a role in immune-mediated adhesion of bacteria to phagocytes and erythrocytes and formation of virus-bacterium associations.

[Distribution of labeled octadecane and its metabolites in rat organs and tissues in chronic peroral administration].

Chronic experiments were made to study cumulation and metabolism of 114C-octadecane in rat organs and tissues. A progressive utilization of the indicator by the animals' body was disclosed, the highest content of the label being found in the adipose tissue and adrenals. Octadecane does not excrete with the urine.