[Effect of rubomycin and carminomycin on suppressor cells participating in the regulation of the immune response].

The effect of rubomycin and carminomycin on induction of suppressor cells in immunization of mice with high doses (2 . 10(9) cells) of sheep red blood cells (SRBC) or with the allogeneic spleen cells was studied. When the spleen cells of syngeneic animals hyperimmunized with SRBC were administered to intact cells, a marked specific suppression of both the antibody formation and the reaction of the delayed type hypersensitivity were observed. A decrease in the suppressor activity or its complete elimination as a result of exposure of the spleen cell donors to the antibiotics was indicative of a relatively selective effect of these drugs on the suppressor cells. This effect of the antibiotics increased after treatment of the spleen immune cells with the anti-T-serum and complement. However, the blocking effect of the antibiotics on the suppressor cells was not strictly specific, since they were detected in the syngeneic and allogenic systems with the cell transfer.