The process includes two parts: 1) egg retrieval and freezing and 2) egg thawing, fertilization and implantation. In total, one round of this process can cost, on average, an estimated $20,000.

An ovarian follicle is a fluid-filled sac in the ovary. Each follicle contains one immature egg (oocyte). During ovulation, one of thousands of follicles ruptures and releases a mature egg.