A third team of scientists has successfully turn skin cells into stem cells that can be coaxed into becoming any kind of tissue. The American researchers are the first group to manage the feat with a volunteer's cells, not cells grown in a lab, which demonstrates that such cells could be widely available.
The method is still not ready to be utilized to create treatments for humans because it uses retroviruses to transform the skin cells into stem cells, and because stem cells created by this process have been known to cause tumors in mice. Researchers, however, did manage to alter the cells without the cancer gene they believe was responsible for the tumors in earlier experiments. (More stem cell research stories.)