title: HLA-B27, Klebsiella, and ankylosing spondylitis.
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial / Q000276:immunology; D003429:Cross Reactions; D003601:Cytotoxicity Tests, Immunologic; D006680:HLA Antigens / Q000276:immunology*; D006801:Humans; D007106:Immune Sera / Q000276:immunology; D007709:Klebsiella / Q000276:immunology*; D007710:Klebsiella Infections / Q000276:immunology*; D008214:Lymphocytes / Q000276:immunology; D011817:Rabbits; D013167:Spondylitis, Ankylosing / Q000276:immunology*
chemical_list: D000942:Antigens, Bacterial; D006680:HLA Antigens; D007106:Immune Sera