Daoud, Munaf S., and Faraid A. AL- chalabi. 2007. “DNA Content of Spermatozoa With Respect to Seminal Sperm Concentration Using a Microchemical Spectrophotometric Method”. Journal of the Faculty of Medicine Baghdad 48 (4): 410-12. https://doi.org/10.32007/jfacmedbagdad.4841467.