[ON SO-CALLED "SUB-GROUPS" OF BLOOD GROUPS].
D001789:Blood Group Antigens; D001787:Blood Group Incompatibility; D001803:Blood Transfusion; D006801:Humans
D001789:Blood Group Antigens
BLOOD GROUP INCOMPATIBILITY; BLOOD TRANSFUSION
A V'ERCSOPORTOK 'U. N. "ALCSOPORTJAIR'OL".