1–3 embryos are transferred to the uterus with the aid of ultrasound.
If there are more embryos developed than transferred, then it is possible, if desired, to freeze the embryos of good quality. It is possible to freeze embryos in vitro and preserve them for seven years. Frozen preservation does not affect the quality of the embryo. If you wish to stop the frozen preservation of embryos or if it has been 7 years, then the embryos can be used for scientific research or they have to be destroyed (depending on what you agreed upon in the contract). The preservation of embryos is fee-based starting from the 63th day.