self-repair for brain and other cells found

Triggering stem-cell growth could help brain recover after a stroke.
Ronald McKay and his colleagues at the National Institute of Neurological Disorders and Stroke in Bethesda, Maryland, have now shown that one protein, called Notch, can boost the survival of three different types of stem cell1. Notch sits on cell surfaces and is vital for the correct growth of embryos.
interesting advanced research into tirggering cell growth in areas once thought impossible. this has special implications for stem cell research, too.

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