AB241. Cancer stem cell-like side population cells in clear cell renal cell carcinoma cell line 769P

BackgroundAlthough cancers are widely considered to be maintained by stem cells, the existence of stem cells in renal cell carcinoma (RCC) has seldom been reported, in part due to the lack of unique surface markers. We here identified cancer stem cell-like cells with side population (SP) phenotype in five human RCC cell lines.