RU 21. Down - regulation of Id-1 in bladder cancer cells can increase the cellular chemosensitivity and epirubicin - induced apoptosis - Hu, Hao; Xu, Ke-Xin; Wang, Yu-Liang; Zhang, Xiao-Peng; Yu, Lu-Ping; Wang, Xiao-Feng (Translational Andrology and Urology, 2012)