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. 2017 Mar 30;9(4):128. doi: 10.3390/polym9040128

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© 2017 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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DNA extension–time curves under the influence of Ph₄As⁺. (A) The shrinking of DNA at pulling force 0.5 pN; (B) unraveling of DNA condensed structures.