title: Prolongation of the life span in rats.
mesh_terms: D000375:Aging / Q000187:drug effects*; D000818:Animals; D001835:Body Weight; D004247:DNA / Q000008:administration & dosage / Q000494:pharmacology; D007267:Injections; D008017:Life Expectancy; D012313:RNA / Q000008:administration & dosage / Q000494:pharmacology; D051381:Rats; D013997:Time Factors
chemical_list: D012313:RNA; D004247:DNA