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Morphological analysis of dual neurotrophic factors in split Y-nerve regeneration. (A,B) Quantification of the number of unmyelinated and myelinated axons. (C) Myelinated axon fiber diameter. (D–F) Scatter plots of G-ratio as a function of myelinated axon diameter; dotted lines represent distribution of small, medium, and large axons. Data represented at mean ± SEM. n = number of sampled EM pictures per group. (*P ≤ 0.05, ***P ≤ 0.001, ****P ≤ 0.0001).
