Fig. 5From: Effects of vitamin D3 on the level of heat shock protein 70 and oxidative stress in human sperm: a pilot studyEffects of Vit.D3 on intracellular ROS in normal (N) and asthenozoosperm (A) samples. The values are expressed as means of optical absorption rate. *Significant difference as compared to the control group [CI = 0.0025–0.048]Back to article page