Suppression by soluble factor released from B cells.
D000917:Antibody Formation; D000921:Antibody-Producing Cells / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology*; D001853:Bone Marrow / Q000276:immunology; D001854:Bone Marrow Cells; D002478:Cells, Cultured; D007165:Immunosuppression Therapy; D013154:Spleen / Q000166:cytology; D013601:T-Lymphocytes / Q000276:immunology