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. 2019 Jul 31;6:223. doi: 10.3389/fvets.2019.00223

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Copyright © 2019 Ugur, Kutchy, Menezes, Ul-Husna, Haynes, Uzun, Kaya, Topper, Moura and Memili.

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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Flow cytometric measurement of H4 and H4 acetyl in high and low fertility bulls. The FL1-H channel (Q3 quadrant) shows the florescence of H4 positive sperm and US (Q4 quadrant) unstained sperm or not positive for H4 in high and low fertile bulls (A,B). Similarly, FL2-H channel (Q1 quadrant) are H4 acetyl positive sperm and US (Q4 quadrant) unstained sperm or not positive for H4 acetyl in high and low fertile bull (C,D).