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. 2012 Dec;28(4):217–224. doi: 10.5487/TR.2012.28.4.217

Fig. 5. Histopathological examination was performed in the lungs of rats exposed to TiO2 nanoparticles for 2 weeks. (A) Lung of control rat. (B) Day 1 post-exposure. (C) Day 7 postexposure. (D) Day 15 post-exposure. Arrows indicate pigmented macrophages in alveoli. Hematoxylin and eosin, 400 × magnification.

Fig. 5.