Disappearance rate of spermatozoa from the ejaculate following vasectomy.
D005298:Fertility; D006801:Humans; D008297:Male; D008722:Methods; D011247:Pregnancy; D012661:Semen; D013094:Spermatozoa; D013245:Sterilization, Reproductive; D014649:Vas Deferens / Q000601:surgery*