SOX2 and cancer: Conversely, the mesenchymal markers fibronectin, N‐cadherin and vimentin, the EMT‐TFs Snail, Slug, Zeb1 and Zeb2, and the cancer stem cell markers CD44, Sox2 and Id1 were strongly induced by TGFβ and repressed by BMP in 3D cultures (Fig. 4D,E).