Fig. 6From: Effect of exposure to CeO2 nanoparticles on ram spermatozoa during storage at 4 °C for 96 hoursReactive oxygen species (ROS) production by ram semen exposed to increasing concentrations of CeO2 NPs. Results are shown as means ± SEM of fluorescence following H2DCFDA staining. Asterisk indicates significant difference (P < 0.05) between time pointsBack to article page