title: A case of Ax phenotype transmitted by an A2B parent.
abstract: The authors report a family in which the father is Ax, the mother B, the paternal grandmother Ax; 3 children out of 6 are A2B and the other three Ax. One of A2B children is married to an O subject, and she had a son of phenotype Ax. It was observed that Ax gene in position trans of a B gene behaves phenotypically as an A2.
mesh_terms: D000017:ABO Blood-Group System; D006801:Humans; D007519:Isoantigens / Q000032:analysis; D010375:Pedigree; D010641:Phenotype
chemical_list: D000017:ABO Blood-Group System; D007519:Isoantigens