sperm injection IVF
sperm injection IVFA method of in vitro fertilization in which an ovum is held steady by a suction device while a single sperm is injected directly into it through a very fine needle. The method, which was adopted to ensure fertilization in cases in which the father's sperm count is too low, has been criticized on the grounds that it may increase the likelihood of birth defects. It is suggested that it interferes with the natural selection process in which only the fittest sperms are able to penetrate the egg.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005