CD4 and autoimmune hemolytic anemia: In order to investigate the potential TFH-associated differences in AIHA mouse model, transfused recipients were grouped as either non-responder (no autoantibodies) or responder (more than 75% erythrocyte with red cell-specific autoantibodies).The percentage of CD4+CXCR5+CD25−Foxp3− TFH cells was analyzed by flow cytometry in these groups.