Most positive B cell crossmatches are not caused by anti-HLA-DR antibodies.
D001402:B-Lymphocytes / Q000276:immunology*; D006085:Graft Survival; D000949:Histocompatibility Antigens Class II / Q000032:analysis*; D006650:Histocompatibility Testing; D006801:Humans; D016030:Kidney Transplantation; D014184:Transplantation, Homologous
D000949:Histocompatibility Antigens Class II