Fig. 3From: Resveratrol and lycium barbarum polysaccharide improve Qinling giant panda (Ailuropoda melanoleuca Qinlingensis) sperm quality during cryopreservationEvaluation of the effect of antioxidants on mitochondrial activity and DNA integrity in giant panda spermatozoa. (A) Sperm mitochondrial activity assessed by staining with PI and Rh123. (B) DNA integrity evaluated using AO staining. Values are shown as mean ± SEM (n = 3). Letters a, b, c, d and e indicate significant difference levels, P<0.05.Back to article page