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. 2017 May 30;8:361. doi: 10.3389/fphys.2017.00361

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Copyright © 2017 Ahmed, Yang, Huang, Chen, Liu, Wang, Nabi, Liu and Chen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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TEM photograph of Sertoli cells of the ST. Some integrity spermatozoa internalized within Sertoli cell. The dotted line shows the boundaries between the Sertoli cells (A). (B,C) Show higher magnification of the boxed area in (A). A living spermatozoon with remaining adherens junction internalized of Sertoli cell (B), and the Sertoli cell degraded the internalized cell through autophagy/lysosomal (C). Spermatozoa (Sp), Sertoli cell (SC), lysosome (ly), and autophagosome (As). Scale bar = 10 μm (A) 2 μm (B), and 1 μm (C).