A baby girl has been born to a surrogate mother almost five years after she was conceived, British doctors said Tuesday.
Baby Jennifer Gunther spent four years and two months as a frozen embryo before her biological parents found a surrogate mother willing to carry her.
Her own mother had nine failed attempts at in-vitro fertilization before some of the embryos used in the treatment were frozen in the hope of future implantation in another woman.
Mike MacNamee, scientific director of Britain's Bourn Hall infertility clinic where the treatment was carried out, said Jennifer was the result of the oldest frozen embryo to be transplanted into a surrogate.
The announcement prompted British infertility experts to call for a review of a five-year limit on storing frozen human embryos before they are destroyed, saying it would kill the hopes of thousands of couples desperate for children.