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Marrow converted into brain cells

Last year, biologists found that precursor cells in the brain can act just like bone marrow and give rise to red and white blood cells (SN: 1/23/99, p. 54: http://www.sciencenews.org/sn_arc99/1_23_99/fob5.htm). In a reversal of that trick, investigators now report that they can efficiently transform human bone marrow into what appear to be nerve cells, or neurons.

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