We next screened by flow cytometry this panel of cell tumour phenotypes with epithelial markers (EpCAM, E-cadherin, Muc1, claudin-3 andclaudin-4) or non-epithelial markers (N-cadherin, vimentin, CD66, EGFR, FGFR, EphB4,ALDH1 and CD49f). The gene discussed is ALDH1A1; the disease is neoplasm.