Scientists have taken a significant step towards producing transplant tissue that's genetically matched to women by stimulating unfertilized eggs to create embryonic stem cells. This achievement suggest that one day woman who wants a transplant to treat a condition like diabetes or a spinal cord injury could provide eggs to a lab, which in turn could create tissue that her body wouldn't reject. Such cells can develop into virtually any tissue of the body, and someday may be used for producing specialized tissues like nerve cells or pancreas cells to treat a range of illnesses. To create tissues that genetically match a patient, some scientists are trying to develop a process called therapeutic cloning.

Scientists are also trying to stimulate woman's unfertilized egg to produce stem cells that are genetically matched to the egg donor.
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