Since the epithelium-specific deletion of TGF-β receptor type II (TβRII) plays a critical role in protecting mice from bleomycin-induced pulmonary fibrosis (Li et al., 2011), we examined the effects of DLP and DHP on the expression levels of TβRII by immunohistochemistry staining and image analysis. Here, TGFBR2 is linked to pulmonary fibrosis.