Fig. 4From: Effect of exposure to CeO2 nanoparticles on ram spermatozoa during storage at 4 °C for 96 hoursVelocity distribution of ram spermatozoa exposed to increasing doses of CeO2 NPs and stored for 96 h at 4 °C. Different letters (a, b) indicate significant differences among treatments within time points (P < 0.05). Results are shown as means ± SEMBack to article page