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. 2018 Mar 21;1(2):10. doi: 10.3390/mps1020010

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© 2018 by the authors.

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/).

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Cytosine modifications. Deoxycytidine (dC) is modified by DNA methyltransferases (DNMT) and ten-eleven translocation (TET) proteins. Recycling reactions by thymine DNA glycosylase (TDG) or base excision repair (BER) enzymes returns modified cytosine to its unmodified state.