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. 2021 May 14;7(20):eabg4123. doi: 10.1126/sciadv.abg4123

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Fig. 1 — (A) Confocal images of random (RO) fibers, (B) aligned fibers fabricated on a collector rotating at 1000 rpm (AO 1000), and (C) aligned fibers fabricated on a collector rotating at 3000 rpm (AO 3000). (D) Orientation graph of electrospun fibers aligned within 10° of the origin expressed as a percentage of all fibers. Scale bar represents 50 μm and is the same across images. The white double-headed arrow represents the direction of fiber alignment. Values represent means ± SD (n = 5). Bars that share letters are not significantly different. Conversely, bars that do not share a letter are significantly different (P < 0.05).