TGFB1 and idiopathic pulmonary fibrosis: After observing induction in WI-38 cells of IPF myofibroblast markers (Figure 8A), we expanded our literature search and found a striking overlap (TGF-β signaling, YAP1 activity, and EMT) between our data and scRNA-seq expression profiles from alveolar epithelial cells collected from IPF patients (Xu et al., 2016).