IL17C and pulmonary fibrosis: Inflammation and fibrosis based on histological analysis (HE and EVG staining, respectively) were also comparable in the lungs of Il17c−/− and wild-type mice during bleomycin-induced pulmonary fibrosis (Fig. 6b,c), indicating that IL-17C is not essential for development of bleomycin-induced pulmonary fibrosis.