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Histopathological images of the sciatic nerve and gastrocnemius muscle (× 400) cross-sections stained by hematoxylin–eosin (H&E) at the end of 12th-week post-surgery. a PCL conduit, b PCL/CNF conduit, c autograft, d positive control, e negative control. Narrow arrows: focal epineurium loss, asterisks: collagen hyperplasia, arrowheads: vacuolation, thickened arrows: atrophied muscle fiber
