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. 2019 Oct 1;7:188. doi: 10.3389/fcell.2019.00188

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Copyright © 2019 Avidor-Reiss, Mazur, Fishman and Sindhwani.

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) and the copyright owner(s) 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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The spermatozoa of human (A), bovine, and rabbit (B) share many properties not found in mice (C), including the presence of one typical and one atypical centriole. Drawings are based on electron microscopy of Zamboni and Stefanini (1971), Fawcett (1975), and Ounjai et al. (2012). Mammalian sperm dimensions are from Cummins and Woodall (1985).