title: Ileal inflammation in B27-positive reactive arthritis.
mesh_terms: D001168:Arthritis / Q000150:complications*; D003424:Crohn Disease / Q000150:complications; D006680:HLA Antigens / Q000032:analysis*; D015796:HLA-B27 Antigen; D006801:Humans; D007079:Ileitis / Q000150:complications*
chemical_list: D006680:HLA Antigens; D015796:HLA-B27 Antigen