TGFB1 and idiopathic pulmonary fibrosis: While many cell types produce TGFβ isoforms which can also be stored as latent growth factor bound in the ECM [46–48], we focussed on the epithelium and found increased expression of TGFB2, as well as SNAI2 in IPF epithelial cells using publicly available datasets, with scrape wounding of ATII cells also inducing TGFB2 expression in vitro.