title: The secretory background to gastric and duodenal ulcer.
mesh_terms: D004381:Duodenal Ulcer / Q000175:diagnosis / Q000378:metabolism*; D004724:Endoscopy; D005750:Gastric Juice / Q000378:metabolism*; D005753:Gastric Mucosa / Q000378:metabolism; D005773:Gastroscopy; D006801:Humans; D010434:Pepsin A / Q000378:metabolism; D010435:Pepsinogens / Q000378:metabolism; D012636:Secretory Rate; D013276:Stomach Ulcer / Q000175:diagnosis / Q000378:metabolism*
chemical_list: D010435:Pepsinogens; D010434:Pepsin A