The relationship between periodontal disease and blood groups and secretor status.
D000017:ABO Blood-Group System; D000293:Adolescent; D000328:Adult; D001789:Blood Group Antigens; D006801:Humans; D010510:Periodontal Diseases / Q000097:blood* / Q000235:genetics*
D000017:ABO Blood-Group System; D001789:Blood Group Antigens