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. 2018 Mar 22;27(1):23–30. doi: 10.1177/0963689717727541

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© The Author(s) 2018

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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Fig. 2. — (A) Cross-sectional point for ultrastructural analysis of human-derived amniotic epithelial cell (hAEC)–derived tubular structures. (B) Electron microscopy image of hAEC-derived web with a rudimentary lumen.