title: [Study of secretory function of the stomach in middle-aged and old patients].
mesh_terms: D000367:Age Factors; D000368:Aged; D005745:Gastric Acidity Determination; D005750:Gastric Juice / Q000378:metabolism*; D006801:Humans; D008875:Middle Aged; D010418:Pentagastrin; D013270:Stomach / Q000502:physiology*
chemical_list: D010418:Pentagastrin
vernacular_title: Issledovanie sekretornoĭ funktsii zheludka u liudeĭ pozhilogo i starcheskogo vozrasta