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Redrawn fluorescent images of electrospun fibers (a) with cells grown inside and outside the coil or ring-type fibers and (b) cells outside the randomly oriented entangled structure (adopted from [40] with permission). Schematic of cell attachment to electrospun fibers: (c) cell inside the coil, (d) cell outside the coil and (e) cells outside randomly oriented, long entangled fibers.
