1. Relationship between oxidative stress, semen characteristics, and clinical diagnosis in men undergoing infertility investigation 
Fabio F Pasqualotto, M.D., Rakesh K Sharma, Ph.D., David R Nelson, M.S., Anthony J Thomas, M.D., Ashok Agarwal, Ph.D. 
Fertility and Sterility 
Volume 73, Issue 3, Pages (March 2000)
DOI: /S (99)

2. Figure 1
Relationship between ROS and sperm concentration (r) within four groups of patients: (A) varicocele, (B) vasectomy reversal, (C) idiopathic infertility, and (D) varicocele associated with infection.
Pasqualotto. Oxidative stress. Fertil Steril 2000.
Fertility and Sterility  , DOI: ( /S (99) )