Alternative RNA Processing of Topoisomerase IIα in Etoposide-Resistant Human Leukemia K562 Cells: Intron Retention Results in a Novel C-Terminal Truncated 90-kDa IsoformRagu Kanagasabai, Jack C. Yalowich, Soumendrakrishna Karmahapatra et al.|Journal of Pharmacology and Experimental Therapeutics|2016Cited by 21