title: HLA-B27: speculations on the nature of its involvement in ankylosing spondylitis.
mesh_terms: D003429:Cross Reactions; D006680:HLA Antigens / Q000235:genetics*; D015796:HLA-B27 Antigen; D006801:Humans; D007709:Klebsiella / Q000235:genetics / Q000276:immunology; D007710:Klebsiella Infections / Q000150:complications; D010957:Plasmids; D013167:Spondylitis, Ankylosing / Q000209:etiology / Q000235:genetics / Q000276:immunology*
chemical_list: D006680:HLA Antigens; D015796:HLA-B27 Antigen