STAT1 deficiency in epithelial cells increases susceptibility to chronic lung disease after SeV infection. (A) Hematoxylin and eosin staining of lung sections from WT and Foxj1-Scgb1a1-Cre-Stat1f/f mice at 49 d after infection with SeV or SeV-UV. Scale bar, 500 μm. (B) PAS staining and Muc5ac immunostaining for conditions in (A). Scale bar=400 μm. (C) PAS staining and Muc5ac immunostaining for conditions in (A). Scale bar, 500 μm. (D) PAS staining and Muc5ac immunostaining for conditions in (A). Scale bar, 500 μm. (E) Quantitation of PAS staining and Muc5ac immunostaining from conditions in (C, D). For (A-E), data are representative of 3 separate experiments (n≥8 mice per condition in each experiment). For (E), * indicates p<0.05.