title: [Clinical and experimental studies on the etiology of peptic ulcer].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D005260:Female; D005750:Gastric Juice / Q000502:physiology; D005753:Gastric Mucosa / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010434:Pepsin A / Q000502:physiology; D010437:Peptic Ulcer / Q000209:etiology*; D051381:Rats
chemical_list: D010434:Pepsin A