A dominant suppressor of A and B.
D000017:ABO Blood-Group System; D005799:Genes, Dominant; D006801:Humans; D007518:Isoantibodies / Q000032:analysis*; D008297:Male; D010375:Pedigree; D012463:Saliva / Q000276:immunology; D013489:Suppression, Genetic
D000017:ABO Blood-Group System; D007518:Isoantibodies