title: Letter: HL-A antigen W27--a genetic link between ankylosing spondylitis and Reiter's syndrome?
mesh_terms: D016918:Arthritis, Reactive / Q000235:genetics* / Q000276:immunology; D005260:Female; D006649:Histocompatibility Antigens / Q000032:analysis*; D006801:Humans; D008297:Male; D013167:Spondylitis, Ankylosing / Q000235:genetics* / Q000276:immunology
chemical_list: D006649:Histocompatibility Antigens