FN1 and nasopharyngeal carcinoma: By demarcating the border of the glial scar using GFAP and examining the expression of extracellular matrix components such as fibronectin and PDGFR-β, we found that transplantation with NPC- or Olig2PC-Astros reduced the area of the lesion scar and reduced deposition of fibronectin and PDGFR-β in the lesion area.