Figure 4From: Cytotoxicity, oxidative stress, and genotoxicity in human hepatocyte and embryonic kidney cells exposed to ZnO nanoparticles Cytotoxicity of ZnO NPs on human hepatocyte (L02) cells and human embryonic kidney (HEK293) cells (single asterisk, p < 0.05; double asterisk, p < 0.01). Back to article page