CLONED stem cells may be "younger", "fitter" and much better at replacing tissue damaged by disease or age than those from other sources. If confirmed, the finding will provide a major boost for therapeutic cloning.
The idea of therapeutic cloning is to take adult cells from a person's body, create cloned embryos and extract embryonic stem cells that can turn into a wide range of tissues, all a perfect match for the patient. But recent research suggests that stem cells in adults are just as versatile as embryonic ones, which might make cloning unnecessary.
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