A woman who donates her eggs. Egg recipient A woman who receives embryos created with donor eggs. The sperm and the seminal fluid that comes out of the urethra when a man has an orgasm. Embryo A fertilized egg up to eight weeks developed. A couple who donate their spare embryos to either infertile couples or for research purposes.
Embryo recipient A woman who receives one or more donated embryos.
Embryo transfer The replacement of one or more embryos into the uterine cavity. The lining of the womb, it undergoes cyclical changes during the menstrual cycle. The presence of small implants of endometrial tissue outside the uterus in abnormal locations. Epididymis Coiled tubing outside the testicles which store the sperm. The main female hormone.