title: DNA topoisomerases--new twists to tumour therapy.
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D004264:DNA Topoisomerases, Type I / Q000378:metabolism; D004250:DNA Topoisomerases, Type II / Q000378:metabolism*; D006801:Humans; D009369:Neoplasms / Q000188:drug therapy*
chemical_list: D000970:Antineoplastic Agents; D004264:DNA Topoisomerases, Type I; D004250:DNA Topoisomerases, Type II