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Representative TEM micrographs of electrospun scaffold morphology. A) TEM micrograph of cross-section of bicomponent nanofibers in the coaxial scaffold. Outer sheath contains gold nanoparticles (small black dots, arrows) to distinguish from inner core. Scale bar = 2μm. B) Further magnification of cross-section of bicomponent nanofiber of coaxial scaffold. Arrows indict gold nanoparticle presence in sheath of fiber. Scale bar = 740nm.
