Fig. 3.

Cellular MRI shows CXCL12 induced stronger migration of NPCs along the CC in vivo. a The infusion tube appeared on the left while the NPC graft on the right as labeled. On D1, CXCL12 infusion led to a slight hypointense stream directed toward the side of the infusion tube. On D3, the migratory path extended from the NPC graft toward the infusion site. On D7, the path became more visible due to increased hypointensities. b Infusion of vehicle induced no obvious signal change along the callosal pathway with time. The vehicle- and CXCL12-treated groups contained five and six rats, respectively