C3 and autoimmune hemolytic anemia: The study by Xing (125) reveals that the level of miR-150 in B lymphocytes from AIHA/ES hemolysis patients’ peripheral blood is significantly lower than that in the healthy controls, and it partially reveals the severity of AIHA/ES, because of the inverse correlation with total bilirubin (TBIL) concentration and indirect bilirubin (IBIL) concentration and positive relation with the complement 3 (C3) level.