[The ABO blood groups in cancer of the stomach and in gastroduodenal ulcers].
D000017:ABO Blood-Group System; D001789:Blood Group Antigens; D006801:Humans; D009369:Neoplasms; D010437:Peptic Ulcer / Q000097:blood*; D013274:Stomach Neoplasms / Q000097:blood*
D000017:ABO Blood-Group System; D001789:Blood Group Antigens
BLOOD GROUPS; PEPTIC ULCER/blood; STOMACH NEOPLASMS/blood