"Rudolf Jaenisch: The technique of therapeutic cloning combines nuclear cloning and embryonic stem cell research with the goal of creating a customized stem cell line for a needy patient. For instance, if anyone of you is severely diabetic, one would take, for example, a skin cell, remove its nucleus and transfer the nucleus into a human egg from which its own nucleus has been removed. The nucleus would be injected then ... would be ... and then the nucleus of this cell is exposed to signals of the egg, it reverts to its embryonic state, and your skin cell begins to re-express those things that it expressed when it was an embryo. Whether the cell that results from this is a new embryo or a skin cell rejuvenated is as much a question of philosophy as of science. The cloned cells can be grown in the petri dish and can be induced to differentiate to insulin producing cells and implanted into you back. They will not be rejected because they are from your own body. So this is one possible scenario, medical scenario, there are many others, including treatment for Parkinson, blood diseases, liver diseases and so on."