Scar tissue presents a barrier to regeneration in the central nervous system (CNS). Although the glial scar has been extensively studied, recent evidence suggests that non-glial components are also involved. In a recent paper, Dias, Kalkitsas, and colleagues uncovered a subset of pericytes as a contributor to fibrotic scarring that is conserved across diverse CNS lesions.
Competing Interests: Declaration of interests The authors declare no conflicts of interest.
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