The process of depositing fertilized eggs (or embryos) inside the uterus. This often occurs 3 to 5 days following egg retrieval. A predetermined number of embryos are first placed inside a special catheter, which is then introduced inside the uterus through the cervix. The embryos are then gently injected and the catheter removed. This procedure is done in a position similar to a pelvic examination for a Pap smear. The patient will remain in that position for roughly fifteen minutes before being discharged. The number of embryos to be transferred depends upon on the age of the woman and the quality of the embryos. The patient will make the informed decision regarding the number of embryos to be transferred after conferring with her physician.