HLA, blood groups and gastrointestinal diseases.
D001789:Blood Group Antigens; D005767:Gastrointestinal Diseases / Q000097:blood / Q000235:genetics* / Q000276:immunology; D006680:HLA Antigens / Q000276:immunology*; D006801:Humans
D001789:Blood Group Antigens; D006680:HLA Antigens