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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Histone modifications on the N terminal tail of histone H3 and H4. For simplicity, only methylation, acetylation and phosphorylation are depicted, however modifications also include arginine methylation and ubiquitination marks.