Complement-mediated hemolysis in cold agglutinin disease. Abbreviations: CA, cold agglutinin; C, complement. Originally published in Biomed Res Int (Berentsen S, Sundic T. Red blood cell destruction in autoimmune hemolytic anemia. Biomed Res Int. 2015;363278). Copyright: S. Berentsen and T. Sundic. Re-used with permission.