The phenotype Ae1B: a probable result of chimerism.

Acute intravascular hemolysis after transfusion of a chimeric RBC unit

“…The first report of blood cell chimerism in twins 10 was published 50 years ago, and more than 100 cases have since been described in the literature 1,3 , 11 . However, most of the reported cases have dealt with serologic and/or genetic markers 12 . ‐15 In the present study, we describe a patient who developed an acute hemolytic transfusion reaction after the transfusion of a chimeric blood unit containing group O and only a small amount of group B RBCs.…”