SOX2 and adenocarcinoma: In our TNBC model, we found up-regulation of Pou5F1 (Oct-3/4), Kit, Cd24 and Itga6 (Cd49f) in epithelial-like adenocarcinoma areas of primary tumors, while Klf4, Sox2, Cripto-1 were expressed in the mesenchymal/EMT-like regions.