![This shows the outline of a head](https://neurosciencenews.com/files/2021/05/injured-nerve-healing-neurosinces-public.jpg)
At the site of injury, nerves release a protein called CXCL12 which attracts growing nerve fibers and keeps them trapped in place. This prevents the nerve fibers from growing in the correct direction to bridge the injury site.
from Neuroscience News https://ift.tt/3bHBnUo
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