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. 2019 Jun 12;28(9-10):1231–1241. doi: 10.1177/0963689719855346

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© The Author(s) 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 7. — Histological and morphometric evaluation of the distal portions of the intact ulnar nerve and the Bio 3D conduit. (A–D) Semi-thin transverse section (toluidine blue staining) under light microscopy. Scale bars: 500 μm (A, B) and 50 μm (C, D). (E, F) Ultra-thin transverse section under transmission electron microscopy. Scale bars: 2 μm. Although elongated myelinated axons with proper myelin sheaths were confirmed in the Bio 3D group, their morphology was slightly less mature compared with that seen in the distal portion of the Intact group and in the mid portion of the Bio 3D group.