Febrile transfusion reactions despite compatible cross matches.
D000368:Aged; D000747:Anemia, Hypochromic / Q000276:immunology / Q000628:therapy; D005260:Female; D006649:Histocompatibility Antigens; D006801:Humans; D065227:Transfusion Reaction
D006649:Histocompatibility Antigens