title: An example of anti-Jra causing hemolytic disease of the newborn and frequency of Jra antigen in the Japanese population.
abstract: An example of anti-Jra which caused hemolytic disease of the newborn is reported. Two other examples of the antibody were detected in random screening of Japanese donors. In testing 19, 298 unrelated Japanese, 5 Jr(a-) individuals were found, i.e. an incidence of 0.0003 (0.03%); the corresponding gene frequencies were Jra 0.984 and Jr 0.016.
mesh_terms: D000328:Adult; D001789:Blood Group Antigens; D004899:Erythroblastosis, Fetal / Q000209:etiology*; D005260:Female; D005787:Gene Frequency; D006801:Humans; D007518:Isoantibodies; D007564:Japan; D008297:Male; D011247:Pregnancy
chemical_list: D001789:Blood Group Antigens; D007518:Isoantibodies