ectopic pregnancya pregnancy that occurs outside the uterus.
egg (oocyte)the female sex cell (ovum) produced in the ovary that creates an embryo when fertilized by a male's sperm.
egg retrievala surgical procedure in which eggs are removed from the body with a thin needle.
embryoa fertilized egg that has begun cell division.
embryo culturethe process of growing embryos within a laboratory.
embryo transferplacement of an embryo into the uterus (in some ART processes, into the fallopian tube).
endometriosisa disease in which the tissue of the uterine lining grows outside the uterus.
estradiola form of estrogen (the most biologically active) produced by the follicular cells of the ovary.
estrogena hormone that, in women, causes the uterine lining to thicken during the first half of the menstrual cycle in preparation for possible pregnancy.
euploid embryoan embryo with the normal number of 46 chromosomes.
Adapted from Assisted Reproductive Technology: A Guide for Patients. American Society for Reproductive Medicine, 2011.