title: HLA-B27 and risk of ankylosing spondylitis.
mesh_terms: D005260:Female; D006680:HLA Antigens / Q000032:analysis; D006650:Histocompatibility Testing; D006801:Humans; D008297:Male; D012306:Risk; D012737:Sex Factors; D013167:Spondylitis, Ankylosing / Q000175:diagnosis / Q000235:genetics / Q000276:immunology*
chemical_list: D006680:HLA Antigens