Absence of Autoanti‐Jk3 as a Component of Anti‐dl

Abstract
Since the 1st recognizable blood group specificity of an autoantibody in a case of autoimmune hemolytic anemia, many other antibodies have been implicated as causative of that disease. Examples (35) of anti-dl, autoantibodies initially reacting with all red blood cells against which they were tested, were examined prior to and following adsorption with Jk(a.sbd.b.sbd.) red blood cells. None of them contained autoanti-Jk3. One example of autoanti-Jka was identified in an adsorbed eluate. The antibody had been produced by a pregnant Caucasian, in whom laboratory and clinical evaluation showed that the auto-antibody was benign in vivo.