He described the potential of using a patient's own skin cells and a donor egg to produce neural cells that would be injected into the brain.

CNN: Reagan calls for?increased stem cell research

The woman is undergoing a strict regimen of immunosuppression therapy so her body does not reject the donor skin, a problem that has been encountered in other skin transplants, the doctors said.

CNN: Face transplant woman thanks team

Devauchelle said most of the facial muscles of the recipient were preserved and it was mostly a question of attaching the donor skin and nerves.

CNN: Face transplant woman thanks team