title: [Relationship between serum pepsinogen levels and gastric acid-pepsin secretion].
mesh_terms: D005260:Female; D005744:Gastric Acid / Q000378:metabolism*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010434:Pepsin A / Q000378:metabolism*; D010435:Pepsinogens / Q000097:blood*; D010437:Peptic Ulcer / Q000378:metabolism; D011863:Radioimmunoassay
chemical_list: D010435:Pepsinogens; D010434:Pepsin A