title: DNA topoisomerase activity associated with Rous sarcoma virus.
mesh_terms: D000818:Animals; D001358:Avian Sarcoma Viruses / Q000201:enzymology*; D002467:Cell Nucleus / Q000201:enzymology; D002642:Chick Embryo; D004264:DNA Topoisomerases, Type I / Q000302:isolation & purification* / Q000378:metabolism; D004278:DNA, Superhelical / Q000378:metabolism; D012367:RNA, Viral / Q000378:metabolism
chemical_list: D004278:DNA, Superhelical; D012367:RNA, Viral; D004264:DNA Topoisomerases, Type I