The child she had carried for nine months was the genetic offspring of another woman, who had donated an unfertilized egg.
Because the presence of RU 486 blocks the action of progesterone, the uterine lining sloughs off, and the embryo is expelled, as an unfertilized egg is during a normal period.
The problem, however, as Eggan puts it, is that "there are never any extra unfertilized eggs hanging out at IVF clinics.
DNA-Swap Technology Almost Ready for Fertility Clinic Mitochondrial transfer technology to shuffle genetic material between unfertilized eggs could help reduce the risk of childhood diseases -- Read more on ScientificAmerican.com
March 6, 2014 - Scientific American
Orrin Hatch in TheRealityCheck.Org In a 2001 letter to HHS Secretary Tommy Thompson, Hatch wrote, "To me, a frozen embryo is more akin to a frozen unfertilized egg or frozen sperm than to a fetus naturally developing in the body of a mother."