Varicocele: A varicose vein on the testicles. It is thought that these may cause overheating of the testicle and be detrimental to sperm production.
Vas Deferens: Pair of tubes which connect the epididymis to the urethra and transport sperm during ejaculation.
Vitrification: The process of gamete or embryo storage (cryopreservation) that avoids ice crystal formation by the use of high cooling rates and a high concentration of cryoprotectant.
Page last updated: 18 July 2012