1. Leukocytospermia is associated with increased reactive oxygen species production by human spermatozoa 
Ramadan A Saleh, M.D., Ashok Agarwal, Ph.D., Engin Kandirali, M.D., Rakesh K Sharma, Ph.D., Anthony J Thomas, M.D., Essam A Nada, M.D., Donald P Evenson, Ph.D., Juan G Alvarez, M.D. 
Fertility and Sterility 
Volume 78, Issue 6, Pages (December 2002)
DOI: /S (02)

2. FIGURE 1
Correlation of seminal leukocyte concentrations with ROS-TAC score in donors (○), nonleukocytospermic patients (•), and leukocytospermic patients (▵).
Saleh. Leukocytospermia and ROS levels.Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (02) )

3. FIGURE 2
Correlation of DFI with (A) pure-sperm ROS and (B) PMA-induced ROS in donors (○), nonleukocytospermic patients (•), and leukocytospermic patients (▵).
Saleh. Leukocytospermia and ROS levels.Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (02) )

4. FIGURE 3
Correlation between PMA-induced ROS levels (× 106cpm) with sperm concentration (A); sperm motility (%; B); and normal sperm (according to WHO criteria; C) forms (%) in donors (○), nonleukocytospermic patients (•), and leukocytospermic patients (▵).
Saleh. Leukocytospermia and ROS levels.Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (02) )