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Area of nerve regeneration. For all three groups, there was no significant difference between area of regeneration at distal end and at the middle. At midpoint, nerve graft has higher area of regeneration than either anisotropic scaffold group (# p-value < 0.05). However, at distal end, area in nerve graft is higher compared to continuous-gradient group only (** p-value<0.05). All error bars indicate standard error of mean.
