Spondylarthropathies.
D000818:Animals; D015796:HLA-B27 Antigen; D006801:Humans; D007592:Joint Diseases / Q000276:immunology / Q000473:pathology / Q000628:therapy; D013122:Spinal Diseases / Q000276:immunology / Q000473:pathology / Q000628:therapy
D015796:HLA-B27 Antigen