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. 2019 Jun 25;4(6):11025–11031. doi: 10.1021/acsomega.9b01166

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Copyright © 2019 American Chemical Society

This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.

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EIS curves of the bare gold electrode, the modification of gold electrode with chitosan (gold/chitosan), gold/chitosan/origami-ssDNA, and gold/chitosan/origami-ssDNA/miRNA. EIS was performed in 5.0 mM [Fe(CN)₆]^3–/4– containing 0.1 M KCl, with a frequency range from 0.1 Hz to 10 kHz.