title: Occurrence and progression of gastritis in patients operated on for peptic ulcer.
mesh_terms: D001706:Biopsy; D004381:Duodenal Ulcer / Q000601:surgery*; D005260:Female; D005743:Gastrectomy / Q000009:adverse effects*; D005750:Gastric Juice / Q000378:metabolism; D005756:Gastritis / Q000209:etiology*; D006632:Histamine; D006801:Humans; D008297:Male; D011183:Postoperative Complications; D011708:Pylorus / Q000601:surgery; D013276:Stomach Ulcer / Q000601:surgery*; D014628:Vagotomy / Q000009:adverse effects
chemical_list: D006632:Histamine