title: [Vitamin PP metabolism in brain tumor patients before and after surgical intervention].
mesh_terms: D000293:Adolescent; D000328:Adult; D001932:Brain Neoplasms / Q000378:metabolism* / Q000601:surgery; D002648:Child; D006801:Humans; D008875:Middle Aged; D009373:Neoplasms, Germ Cell and Embryonal / Q000378:metabolism; D009536:Niacinamide / Q000378:metabolism*; D011182:Postoperative Care; D011300:Preoperative Care
chemical_list: D009536:Niacinamide
vernacular_title: Obmen vitamina PP u bol'nykh s opukholiam golovnogo mozga do i posle operativnogo vmeshatel'stva