TGFB1 and pemphigus foliaceus: B. Li et al. attempted to explore ouabain 10 (Table 1, entry 10) for inhibitory activity against bleomycin-induced PF [42], considering that ouabain can inhibit lung fibroblast activation and epithelial–mesenchymal plasticity via obstructing the TGF-β-Smad signal pathway [43,44].