title: [Some characteristics of endogenous nicotinic acid synthesis in middle-aged and elderly persons].
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D006801:Humans; D008875:Middle Aged; D009539:Nicotinic Acids / Q000096:biosynthesis*
chemical_list: D009539:Nicotinic Acids
vernacular_title: Nekotorye osobennosti éndogennogo sinteza nidotinovoĭ kisloty v organizme liudeĭ pozhilogo i starcheskogo verzasta.