title: Factors determining the site of chronic gastroduodenal ulcers.
mesh_terms: D000818:Animals; D001241:Aspirin / Q000009:adverse effects; D002908:Chronic Disease; D004032:Diet; D004064:Digestive System / Q000098:blood supply; D004386:Duodenum / Q000378:metabolism; D005744:Gastric Acid / Q000378:metabolism; D005752:Gastric Mucins / Q000502:physiology; D005753:Gastric Mucosa / Q000473:pathology; D005756:Gastritis / Q000150:complications; D006801:Humans; D007213:Indomethacin / Q000009:adverse effects; D007511:Ischemia / Q000150:complications; D009119:Muscle Contraction; D010437:Peptic Ulcer / Q000209:etiology / Q000473:pathology*; D010653:Phenylbutazone / Q000009:adverse effects
chemical_list: D005752:Gastric Mucins; D010653:Phenylbutazone; D001241:Aspirin; D007213:Indomethacin