title: Absence of cross-reaction between HLA B27 and yersinia enterocolitica or chlamydia trachomatis in reactive arthritis and ankylosing spondylitis.
mesh_terms: D000818:Animals; D001170:Arthritis, Infectious / Q000276:immunology*; D002692:Chlamydia trachomatis / Q000276:immunology*; D003429:Cross Reactions; D005260:Female; D006680:HLA Antigens / Q000276:immunology*; D015796:HLA-B27 Antigen; D006801:Humans; D011247:Pregnancy; D011817:Rabbits; D013167:Spondylitis, Ankylosing / Q000276:immunology*; D015008:Yersinia enterocolitica / Q000276:immunology*
chemical_list: D006680:HLA Antigens; D015796:HLA-B27 Antigen