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. 2015 Sep 15;8(1):44–53. doi: 10.1007/s40820-015-0060-6

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© The Author(s) 2015

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. 6 — Spectral mapping of size-dependent NP penetration through tissue. a, b Unmapped and mapped images of 20 nm GNPs penetrated through tissue, respectively. c The reflectance spectra obtained for the 20 GNPs localized in the tissue. d, e Unmapped and mapped images of 50 nm GNPs penetrated through tissue, respectively. f The reflectance spectra obtained for the 50 GNPs localized in the tissue