title: Many genes, many clinical features.
mesh_terms: D000328:Adult; D000818:Animals; D016918:Arthritis, Reactive / Q000235:genetics*; D002648:Child; D004198:Disease Susceptibility; D005796:Genes; D006182:H-Y Antigen / Q000235:genetics*; D006680:HLA Antigens / Q000235:genetics*; D015796:HLA-B27 Antigen; D006801:Humans; D051379:Mice; D010641:Phenotype; D013167:Spondylitis, Ankylosing / Q000235:genetics
chemical_list: D006182:H-Y Antigen; D006680:HLA Antigens; D015796:HLA-B27 Antigen