Fig. 1From: Macrophage autophagy protects mice from cerium oxide nanoparticle-induced lung fibrosisExposure to CeO2 NP induces a progressive lung remodeling. Representative lung tissue sections of C57Bl/6 mice exposed to Saline or CeO2 NP and stained with Hematoxylin Eosin (HE) after 1 day (Panel a), 7 days (Panel b) or 28 days (Panel c). Original magnification × 200. Panel d: higher magnification of alveolar macrophages with internalized NPBack to article page