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Annu Rev Neurosci. 2007;30:153-79.

Why is Wallerian degeneration in the CNS so slow?

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1
Department of Neurobiology, Stanford University School of Medicine, Stanford, California 94305, USA. mevargas@stanford.edu

Abstract

Wallerian degeneration (WD) is the set of molecular and cellular events by which degenerating axons and myelin are cleared after injury. Why WD is rapid and robust in the PNS but slow and incomplete in the CNS is a longstanding mystery. Here we review current work on the mechanisms of WD with an emphasis on deciphering this mystery and on understanding whether slow WD in the CNS could account for the failure of CNS axons to regenerate.

[Indexed for MEDLINE]

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