embryo freezing techniques

Embryo freezing, or vitrification, involves preserving fertilized eggs at very low temperatures for future use. The process begins with fertilizing an egg in the lab, then rapidly cooling the embryo using a technique that prevents ice crystal formation, which can damage cells. The embryos are stored in liquid nitrogen at around -196°C. When needed, they’re carefully thawed and may be transferred to the uterus for pregnancy. This method allows individuals to delay pregnancy or preserve fertility due to medical treatments, providing a safe and effective way to maintain viable embryos over time.