title: [Peculiarities of the excretion of nicotinic acid in middle-aged and aged persons].
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000375:Aging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009536:Niacinamide / Q000378:metabolism; D009539:Nicotinic Acids / Q000096:biosynthesis / Q000652:urine*; D009584:Nitrogen / Q000032:analysis
chemical_list: D009539:Nicotinic Acids; D009536:Niacinamide; D009584:Nitrogen
vernacular_title: Osobennosti ékskretsii nikotinovoĭ kisloty u lits pozhilogo i starcheskogo vozrasta.