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. 2014 May 6;15:14. doi: 10.1186/1471-2121-15-14

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Copyright © 2014 Delgado-Ortega et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Ultrastructural views of NPTr cells cultured in ALI conditions. Views of the tight junction (A, black arrow) and the desmosome (B, black arrow) between adjacent cells and microvilli (C, D) after three weeks of culture in ALI conditions are presented. Scale bar 1 μm (A), 0.5 μm (B), 1 μm (C), and 0.2 μm (D).