Growth of new brain cells requires 'epigenetic' switch

New cells are born every day in the brain's hippocampus, but what controls this birth has remained a mystery. Reporting in the 1 January issue of Science, neuroscientists at the Johns Hopkins University School of Medicine have discovered that the birth of new cells, which depends on brain activity, also depends on a protein that is involved in changing epigenetic marks in the cell's genetic material...

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