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. 2009 Sep 11;9(9):7343–7364. doi: 10.3390/s90907343

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© 2009 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 license (http://creativecommons.org/licenses/by/3.0/).

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Figure 6. — Electrical detection of DNA: (A) I–V curves of s-AuNPs: (a) bare s-AuNPs, (b) s-AuNPs with single-stranded DNA (ss-DNA, probe DNA), and (c) s-AuNPs with double-stranded DNA (ds-DNA); (B) I–V curves of sg-AuNPs: (a) bare sg-AuNPs, (b) sg-AuNPs with ss-DNA, and (c) sg-AuNPs with ds-DNA. Reprinted with permission from [86]. Copyright (2008) Elsevier B.V.