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Schematic illustration of NIR imaging system for monitoring in vivo behaviors of polymeric scaffolds and stem cells. (A) 800-nm emitting ZW800–1C-conjugated PCLG-based scaffold (ZW-PCLGs), (B) 700-nm emitting CTNF127-labeled PSCs (CT-PSCs), and (C) NIR imaging for tracking scaffolds and stem cells after transplantation.
