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. 2016 Oct 18;7:470. doi: 10.3389/fphys.2016.00470

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Copyright © 2016 Huang, Yang, Liu, Chen, Chu, Ahmad, Zhang, Li, Hu, 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 the “Chrysanthemum flower center” in the spermatid. (A,B) Low magnification of the spermatids; (C,D) high magnification of the “Chrysanthemum flower center.” Compact nucleus (N), Chrysanthemum flower center (CFC), mitochondrion (Mt), Golgi complex (Gol), lipid droplet (LD), endoplasmic reticulum (), vesicle (), isolation membrane (↑), wrapping autophagosome ().

Inline graphic — TEM photograph of the “Chrysanthemum flower center” in the spermatid. (A,B) Low magnification of the spermatids; (C,D) high magnification of the “Chrysanthemum flower center.” Compact nucleus (N), Chrysanthemum flower center (CFC), mitochondrion (Mt), Golgi complex (Gol), lipid droplet (LD), endoplasmic reticulum (), vesicle (), isolation membrane (↑), wrapping autophagosome ().