[Colony-forming activity of hematopoietic stem cells in tolerant mice as affected by antigens].

The effect of sheep red blood cells (SRBC) and human red blood cells (HRBC) on the amount of CFUs in the bone marrow and spleen of (CBA X C57BL/6) FI SRBC-tolerant mice was studied. The increase in the number of bone marrow and spleen CFUs was demonstrated in SRBC-tolerant mice injected with HRBC. Using SRBC test injection the increase in CFUs amount was observed in the spleen, but not the bone marrow, where the amount of CFUs remained unchanged.