In contrast to Mesenchymal cancer cell lines, which failed to express CK8/18 or CK14 and grew as spindle cells, normal Mesenchymal epithelial cell lines expressed both CK14 and vimentin, and grew as cobblestone islands of cells, suggesting they retained some of the molecular features of normal Mesenchymal epithelial cells found in reduction mammoplasty tissues. The gene discussed is KRT14; the disease is cancer.