Molecular cloning of a cDNA of a camptothecin-resistant human DNA topoisomerase I and identification of mutation sites.
Hiro-omi TamuraChie KohchiRyutaro YamadaTomotake IkedaOsamu KoiwaiEric PattersonJack D. KeeneKosuke OkadaEigil KjeldsenKen NishikawaPublished in: Nucleic Acids Res. (1991)