Loss of Nrf2 potentiates radiation-induced tissue remodeling and collagen deposition. Male wild type (A, C, E, G) and Nrf2 null (B, D, F, H) mice were administered 0 (A, B, E, F) or 12 Gy (C, D, G, H) to the thorax and allowed to recover for 250 days. The degree of tissue remodeling was quantified from H&E sections (I, N = 112 fields, 10 mice) while collagen deposition was quantified from Masson’s trichrome staining (J, N = 71 fields, 10 mice). Black bar = 100 μm. Red arrow in panel C identifies tissue remodeling.