title: Family studies in HLA-B27 associated arthritis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001168:Arthritis / Q000209:etiology / Q000235:genetics* / Q000276:immunology; D016918:Arthritis, Reactive / Q000150:complications / Q000235:genetics; D005260:Female; D006680:HLA Antigens; D006801:Humans; D007249:Inflammation / Q000150:complications / Q000235:genetics; D008297:Male; D008875:Middle Aged; D010375:Pedigree; D012446:Sacroiliac Joint; D013167:Spondylitis, Ankylosing / Q000150:complications / Q000235:genetics
chemical_list: D006680:HLA Antigens