title: Changing concepts in Crohn's disease.
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000627:therapeutic use; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D003061:Codeine / Q000627:therapeutic use; D003093:Colitis, Ulcerative / Q000175:diagnosis; D003424:Crohn Disease / Q000188:drug therapy / Q000453:epidemiology / Q000209:etiology / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D005938:Glucocorticoids / Q000627:therapeutic use; D006801:Humans; D006968:Hypersensitivity, Delayed; D008954:Models, Biological; D009626:Terminology as Topic
chemical_list: D000900:Anti-Bacterial Agents; D005938:Glucocorticoids; D000324:Adrenocorticotropic Hormone; D003061:Codeine