TGFB1 and pemphigus foliaceus: As previously reported, the intravenous administration of iPSCs markedly inhibited bleomycin-mediated activation of TGF-β1/Smad2/3 and epithelial cell to mesenchymal transition (EMT) by up-regulating the epithelial marker E-cadherin and down-regulating mesenchymal markers including fibronectin, vimentin and α-SMA in PF model mouse (Zhou et al., 2016).