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editorial

. 2019 Jan 8;14:13. doi: 10.1186/s11671-018-2828-3

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© The Author(s). 2019

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. 5 — Dark-field light-scattering images of two cell lines at × 20 magnification after incubation with CTAB-GNRs and peptide-f-GNRs for 2 h. The HeLa (as cancer cells with high level of αvβ3 integrins) cells incubated with peptide-f-GNRs (a) and CTAB-GNRs (b). The MDA-MB-231 (as cancer cells with low level of avb3 integrins) cells incubated with peptide-f-GNRs (c) and CTAB-GNRs (d). It seems that peptide replacement promotes the cellular uptake of peptide-f-GNRs