Effect of 5-fluorouracil on the expression of Oct4 and Bmi-1 in human breast cancer cell line MCF7  
Yan Li1, Shi Li-Gang1, Xu Zheng-Shun1, Li Hui-Xiang2
Chinese Journal of Tissue Engineering Research . 2012, (10): 1822 -1826 .  DOI: 10.3969/j.issn.1673-8225.2012.10.025