Although the CNS has a robust innate ability to repair demyelinated axons, this capacity appears to dissipate with age. A study in this issue suggests that epigenetic processes participate in myelin repair and that the epigenetic response is less dynamic in older individuals.
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Popko, B. Epigenetic control of myelin repair. Nat Neurosci 11, 987–988 (2008). https://doi.org/10.1038/nn0908-987
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DOI: https://doi.org/10.1038/nn0908-987
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