title: Chlamydial polyarthritis in a foal.
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial; D001170:Arthritis, Infectious / Q000188:drug therapy / Q000276:immunology / Q000382:microbiology / Q000662:veterinary*; D002642:Chick Embryo; D002689:Chlamydia / Q000276:immunology / Q000302:isolation & purification; D002690:Chlamydia Infections / Q000188:drug therapy / Q000276:immunology / Q000382:microbiology / Q000662:veterinary*; D003168:Complement Fixation Tests; D005455:Fluorescent Antibody Technique; D006734:Horse Diseases / Q000188:drug therapy / Q000276:immunology / Q000382:microbiology; D006736:Horses; D010400:Penicillin G / Q000627:therapeutic use
chemical_list: D000942:Antigens, Bacterial; D010400:Penicillin G