Fig. 4From: Mechanistic study of silica nanoparticles on the size-dependent retinal toxicity in vitro and in vivoSiO2 NPs induce morphological changes in cells. Morphological changes were observed via microscopy in R28 cells after 12 h (A) and 24 h (B) of exposure to 15- and 50-nm SiO2 NPs at the indicated concentrations. Scale bar: 25 μmBack to article page