EPCAM and colorectal carcinoma: CTCDOs and XDOs were then analyzed by flow cytometry for the expression of markers associated to the epithelial/mesenchymal state (EpCAM, Vimentin), to intestinal differentiation (CK20) and to CRC stemness/metastatic ability (CD44v6) (Fig. 3C and Additional file 7: Fig. S3A-C).