Observations on the A2 gene and H antigen in foetal life.
D000017:ABO Blood-Group System; D000942:Antigens, Bacterial; D001789:Blood Group Antigens; D005333:Fetus; D006801:Humans
D000017:ABO Blood-Group System; D000942:Antigens, Bacterial; D001789:Blood Group Antigens; C022863:H antigen
ABO FACTORS; BLOOD GROUPS; FETUS