The oxidative stress of ZnO NPs on Caco-2 cells. Cell viability of Caco-2 cells treated with different concentrations of different-sized ZnO NPs for 24 h. The data are presented as the mean ± SD of three independent experiments (n = 5). (A) ROS change. (B) GSH detection. (C) LDH release. Red, 26-nm ZnO NPs; green, 62-nm ZnO NPs; violet, 90-nm ZnO NPs.
Kang et al. Nanoscale Research Letters 2013 8:496 doi:10.1186/1556-276X-8-496