EPCAM and neoplasm: In fact, CSC fractions in G180 tumor was higher than that in C90 and G0 tumor, because the in vitro cultured cells that were isolated from G180 tumor contained a lot of EpCAM positive cells and have significantly higher sphere formation capacity, which is prominent characteristics of CSC, compared with that from C90 and G0 tumor (Supplemental Figures 4 and 5).