Cross section of uterus showing GIFT. Laparoscopic instrument is releasing sperm and eggs into open end of fallopian tube. Label reads: With GIFT, sperm and eggs are placed in a fallopian tube to allow fertilization in the natural site. The woman must have at least one normal, open fallopian tube. Inset of sperm and eggs in lab dish with label: Sperm and eggs are placed into a fallopian tube.