title: Disappearance of spermatozoa from ejaculate after vasectomy.
mesh_terms: D000328:Adult; D000367:Age Factors; D003075:Coitus; D004542:Ejaculation; D006801:Humans; D008297:Male; D008875:Middle Aged; D009845:Oligospermia; D013094:Spermatozoa / Q000502:physiology*; D013997:Time Factors; D014659:Vasectomy