FIGURE 7.

Histological evaluation of regenerated nerves at 12 weeks after surgery. (A) Representative photograph of toluidine‐blue staining for each group. Scale bar =50 μm. (B) Representative transmission electron microscopy image for each group. Scale bar =2 μm. (C) Enlargement of the image shown in (B). Scale bar =200 nm. (D) The number of regenerated axons in each group. (E) Thickness of the myelin sheath in each group. (F) Perimeter‐based g‐ratio in each group. Data are presented as the mean ±SD. ^* p <.05; ^** p <.01; N.S., no significant difference