title: Blood group antibodies in old age.
mesh_terms: D000017:ABO Blood-Group System; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000373:Agglutinins / Q000032:analysis; D000375:Aging; D005260:Female; D006801:Humans; D007518:Isoantibodies / Q000032:analysis*; D008297:Male; D008875:Middle Aged
chemical_list: D000017:ABO Blood-Group System; D000373:Agglutinins; D007518:Isoantibodies