title: [Biological roles of free radicals: introduction].
abstract: Free radicals are produced during cellular oxidations. The primary ones are superoxide anions (O2-) and hydroxyl radicals (OH). They generate in vivo various secondary radicals. Radical mechanisms are invoked in a number of biological processes including, phagocytosis, ischemia or ageing.
authors.affiliation: Université René Descartes, Paris.
authors.forename: C
authors.initials: C
authors.lastname: Ferradini
mesh_terms: D005609:Free Radicals / Q000378:metabolism*; D006801:Humans; D010084:Oxidation-Reduction
chemical_list: D005609:Free Radicals
vernacular_title: Rôles biologiques des radicaux libres: introduction.