An embryo is the first stage of a developing organism after fertilization. In IVF treatment, it is formed when an egg and sperm cell are fertilized in a laboratory environment. Before being transferred to the uterus, the embryo is monitored for several days in the lab to assess its development.
Selecting healthy and strong embryos plays a critical role in increasing pregnancy success. Embryo transfer is one of the most important stages of IVF treatment.