CSCs express distinctive cell surface markers such as CD24, CD29, CD34, CD38, CD44, CD61, CD90, CD133, CD166, EpCAM, Epithelial antigen (ESA) and CXCR4, and selective ATB-binding Cassette (ABC) transporters such as BCRP, and MRP5; selective expression of these markers differentiate the cancer subtypes[19-21]. The gene discussed is EPCAM; the disease is cancer.