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NCI Dictionary of Cancer Terms


in vitro fertilization  listen  (in VEE-troh FER-tih-lih-ZAY-shun)

  A procedure in which eggs are removed from a woman’s ovary and combined with sperm outside the body to form embryos. The embryos are grown in the laboratory for several days and then either placed in a woman’s uterus or cryopreserved (frozen) for future use.