It indicates that in non-malignant samples, both EPCAM and FOLR1 were markers of epithelial cells; while in tumor samples, tumor and normal epithelial cells had different epithelial markers (EPCAM for tumor epithelial cells and FOLR1 for normal epithelial cells), which may due to the heterogeneity of tumor cells. The gene discussed is EPCAM; the disease is neoplasm.