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SEM images of (A) single microsphere and (B–D) three randomly selected locations. (E) Particle size distribution of microspheres and Gauss fitting. (F) In vitro release of SB216763 from PLGA microspheres at 37°C. (G) gross view of chitosan conduit. (H) SEM images of chitosan conduit transverse section. (I) SEM images of inner surface morphology of chitosan conduit. (J) SEM images of outer surface morphology of chitosan conduit.
