title: Transient reappearance of sperm after vasectomy.
mesh_terms: D000328:Adult; D005069:Evaluation Studies as Topic; D006801:Humans; D007248:Infertility, Male; D008297:Male; D010334:Paternity; D011247:Pregnancy; D012661:Semen / Q000166:cytology; D013094:Spermatozoa; D013245:Sterilization, Reproductive; D013997:Time Factors; D014649:Vas Deferens / Q000601:surgery*