[Structural organization of the antigen-binding receptors of immunocompetent cells]

It was demonstrated in this work that rabbit antimouse serum against the aggregated immunoglobulins (RAAS) and mouse serum against the aggregated mouse immunoglobulins (MAAS) inhibited the rosette-forming B-cells (RFC) on the 5th day after the immunization of mice CBA with SRBC in a dose of 5 X 10(-8) cells in vitro in 1:20--1:80, and 1:10--1:40 dilutions in 83--55 and 72--39%, respectively. In difference from RAAS, MAAS in a dilution of 1:20 induced a statistically significant suppression of the antigen-binding receptors of RFC of-B type in the intact animals, and on the 8th--9th day after their immunization with SRBC. In vivo MAAS induced inactivation of the antigen-binding receptors of B-lymphocytes only. Results of the work carried out served as a confirmation of the fact that immunoglobulins in the form of an antigen-antibody complex (functioning in the capacity of the antigen-binding receptors) were sorbed on B-lymphocytes of the spleen.