Fig. 2From: Exosomes secreted by endothelial progenitor cells accelerate bone regeneration during distraction osteogenesis by stimulating angiogenesisEstablishment of rat tibial distraction osteogenesis model. a Schematic diagram illustrating the timeline of the rat tibial distraction osteogenesis procedures. b Representative photograph after application of external fixation. c Photograph at 4 weeks after consolidation. d In vivo imaging of Exos or EPCs stained with DiR at 2 weeks after injection. EPCs endothelial progenitor cells, Exo exosomes secreted by EPCsBack to article page