1. Varicocele is associated with abnormal retention of cytoplasmic droplets by human spermatozoa 
Armand Zini, M.D., Gina Defreitas, M.D., Marc Freeman, B.Sc., Sloane Hechter, Keith Jarvi, M.D. 
Fertility and Sterility 
Volume 74, Issue 3, Pages (September 2000)
DOI: /S (00)

2. Figure 1
Photomicrograph of a spermatozoon with a cytoplasmic droplet (A, arrow) and one without (B). Spacebar = 5 μm.
Zini. Varicocele and sperm cytoplasm droplets. Fertil Steril 2000.
Fertility and Sterility  , DOI: ( /S (00) )