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[Suppressive effect of xenogenic bone marrow cells on antibody formation in a spleen cell culture in vitro].

Bone marrow cells from syngenetic and xenogeneic donors of different species were added to splenocyte culture to induce the primary immune response to sheep red blood cells. It has been shown that both xenogeneic and syngeneic bone marrow cells suppress the primary immune response in vitro. A conclusion is made that the suppressant effect exerted by bone marrow cells on the immune response of splenocytes is not liable to xenogenic restriction.