Two regions of the brain in adult mammals contain stem cells that can generate new neurons. It seems that astrocytes — cells once viewed merely as padding in the brain — can stimulate the neuron-generating process.
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Svendsen, C. The amazing astrocyte. Nature 417, 29–31 (2002). https://doi.org/10.1038/417029a
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DOI: https://doi.org/10.1038/417029a
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