title: HLA antigens in ankylosing spondylitis: the association of HLA-B27.
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006680:HLA Antigens / Q000032:analysis* / Q000145:classification / Q000235:genetics; D006801:Humans; D008297:Male; D008875:Middle Aged; D013167:Spondylitis, Ankylosing / Q000235:genetics / Q000276:immunology*
chemical_list: D006680:HLA Antigens