After spinal-cord injury, cells called astrocytes form a scar that is thought to block neuronal regeneration. The finding that the scar promotes regrowth of long nerve projections called axons challenges this long-held dogma. See Article p.195
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Liddelow, S., Barres, B. Not everything is scary about a glial scar. Nature 532, 182–183 (2016). https://doi.org/10.1038/nature17318
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DOI: https://doi.org/10.1038/nature17318
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