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. 2016 Apr 12;11:195. doi: 10.1186/s11671-016-1409-6

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© Zhao et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — Schematics and TEM images of GS nanoparticles coated with PEG (a), nanoparticles coated with PEG and aptamer (b), and nanoparticles coated with PEG, HA2 peptide, and aptamer (c)