TGFB1 and pulmonary fibrosis: Many experimental studies have reported that the inhibition of TGF-β by anti-TGF-β antibodies (Giri et al., 1993), TGF-β soluble receptors (Kolb et al., 2001), or TGF-β peptide inhibitors (Arribillaga et al., 2011) has a protective effect against the development of pulmonary fibrosis.