Figure 4. Testicular Redox Status following sleep deprivation and treatment with RibCys and/or Zn. At p<0.05 level, a indicates significant differences from PSD+RibCys, PSD+Zn, PSD+RibCys+Zn and Control while b indicates a significant difference from Controls. PSD=Paradoxical sleep deprivation, RibCys=Riboceine, Zn=Zinc