Influence of chk1 and plk1 silencing on radiation- or cisplatin-induced cytotoxicity in human malignant cells - Qinglei Gao; Xiaoyuan Huang; Duozhuang Tang; Yang Cao; Gang Chen; Yunping Lu; Liang Zhuang; Shixuan Wang; Gang Xu; Jianfeng Zhou; Ding Ma (Apoptosis, 2006)