title: Gastrectomy and secretory function of the stomach.
mesh_terms: D005743:Gastrectomy; D005745:Gastric Acidity Determination; D005750:Gastric Juice / Q000201:enzymology; D005753:Gastric Mucosa / Q000378:metabolism* / Q000473:pathology; D005756:Gastritis / Q000503:physiopathology; D006801:Humans; D010434:Pepsin A / Q000378:metabolism / Q000652:urine
chemical_list: D010434:Pepsin A