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Micro-CT images of rat cranial bone after 8 weeks post-implantation. (A) Negative control; (B) Gelatin sponge loaded with PLGA@PEI; (C) Gelatin sponge loaded with PLGA@pBMP-2/PEI.
Abbreviation: PLGA@PEI, poly(lactic-co-glycolic acid)@polyethlenimine; PLGA@ pBMP-2/PEI, poly(lactic-co-glycolic acid)@plasmid of bone morphogenetic protein 2/polyethlenimine; Micro-CT, micro-computed tomography.
