For example, oxidative stress/TGFB1 activates intrapulmonary myofibroblasts in idiopathic pulmonary fibrosis, and bleomycin recruits bone marrow-derived fibrocytes in bleomycin-induced pulmonary fibrosis (Zeisberg and Kalluri, 2013; Hashimoto et al., 2004; Todd et al., 2012). This evidence concerns the gene TGFB1 and idiopathic pulmonary fibrosis.