Scientists have used a new cloning technique that creates embryo-like induced pluripotent stem cells from adult skin cells to produce full clones or genetic chimeras of lab mice. The new method is more efficient and causes fewer side effects than the procedure used to create Dolly the sheep, raising concerns that it may be used to produce cloned babies. The scientists working on the technique, however, said they intend to use the approach on treatments for diseases such as Parkinson's, Alzheimer's and stroke, and not for human reproduction.

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