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Fluorescence confocal images (100× magnification) of cells on electrospun scaffolds: (A) PLLA; (B) PLLA after hydrolysis and collagen incorporation with EDC; (C) PLLA after aminolysis and collagen incorporation with GTA; (D) PLLA/collagen electrospun by blending; (E) PLLA/collagen electrospun by co-electrospinning and using HFP as the collagen solvent; and (F) PLLA/collagen electrospun by co-electrospinning and using acetic acid solution as the collagen solvent.
