Embryos for embryo adoption come from other couples who have already completed their reproductive project and who have donated their surplus embryos so that other couples can have children.
These embryos may come from donor eggs or from the woman's own eggs, in which case she must have been under 35 years old when the ovarian puncture was performed. The sperm can come from the man himself or from a sperm donor.
Moreover, as per Law requirements, the parents of the donated embryos must not have any known infectious or genetic disease.