Stem-cell therapy is valued for its potential to restore damaged or degenerating tissues. Stem cells are now regularly used to renew blood, and it looks as if the next success could be in treating dystrophic muscle. The potential of stem-cell technologies to revolutionize medical care is causing great excitement among biologists and the general public. Recent studies on embryonic and adult stem cells, coupled with advances in our understanding of how they can be coaxed into forming particular cell types and tissues, have improved the prospects for addressing a host of untreatable diseases.
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