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. 2021 Mar 8;11(3):399. doi: 10.3390/biom11030399

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© 2021 by the author.

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/).

PMC Copyright notice

The structures and functions of modified DNAzyme for Hg²⁺ detection. (a) modified UO₂²⁺-ion-specific DNAzyme; Reprinted with permission from [18]. Copyright 2007 Wiley VCH. (b) Cu²⁺-specific DNAzyme; Reprinted with permission from [85]. Copyright 2012 Elsevier. (c) Mg²⁺-specific DNAzyme. Reprinted with permission from [86]. Copyright 2012 Royal Society of Chemistry.