Fig. 1From: Long-term exposure to commercially available sunscreens containing nanoparticles of TiO2 and ZnO revealed no biological impact in a hairless mouse model a TEM images of ZnO and TiO2 particles extracted from their respective sunscreens. Scale bar = 100 nm; b Histogram showing the distribution of particle diameters. 233 and 257 measurements were made for ZnO and TiO2 particles, respectivelyBack to article page