title: Sexually acquired reactive arthritis.
mesh_terms: D001170:Arthritis, Infectious / Q000209:etiology*; D016918:Arthritis, Reactive / Q000209:etiology*; D002690:Chlamydia Infections / Q000382:microbiology*; D002692:Chlamydia trachomatis / Q000302:isolation & purification; D005260:Female; D006680:HLA Antigens / Q000032:analysis; D015796:HLA-B27 Antigen; D006801:Humans; D008297:Male; D012749:Sexually Transmitted Diseases / Q000209:etiology*; D014521:Urethra / Q000382:microbiology; D014526:Urethritis / Q000209:etiology
chemical_list: D006680:HLA Antigens; D015796:HLA-B27 Antigen