title: Ocurrence of anti-Wr a in blood donors and in selected patient groups, with a note on the incidence of the Wr a antigen.
abstract: The occurrence of the Wr a antigen on the red blood cells of 5,000 primarily Caucasian New York State blood donors was shown to be 1:1,000. Anti-Wr a was detected in sera from random blood donors with a frequency of 1:56 and with progressively increasing frequency in postpartum women, patients undergoing open-heart surgery, hemodialysis subjects, and random persons with other alloantibodies. Anti-Wr a was found in one fourth of sera from patients with positive direct antiglobulin tests, including 12 of 23 in whom the positive test was associated with alphamethyldopa treatment.
mesh_terms: D000328:Adult; D001782:Blood Donors; D001789:Blood Group Antigens; D005260:Female; D006801:Humans; D008297:Male; D009518:New York
chemical_list: D001789:Blood Group Antigens