Analysis of tumor stem cells-related side population in intestine cancer cell line SW-620 
Gao Gang-long, Zhang Xue-li, Liu Wen-yong, Zhang Ping, Ye Dong-xia
Chinese Journal of Tissue Engineering Research . 2010, (36): 6790 -6793 .  DOI: 10.3969/j.issn.1673-8225.2010.36.031