A A1 xh variant of Ah in a Bulgarian family.
D000017:ABO Blood-Group System; D005260:Female; D005796:Genes; D014644:Genetic Variation; D006801:Humans; D008297:Male; D008875:Middle Aged; D010375:Pedigree; D010641:Phenotype; D009626:Terminology as Topic
D000017:ABO Blood-Group System