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. 2019 Dec 9;26(3):1879–1892. doi: 10.1007/s12253-019-00773-3

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© The Author(s) 2019

Open Access This 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. 3 — Cellular uptake of NGR-Dau conjugates 1 (Lys containing) and 2 (Nle containing) at concentrations 2, 10, 50 and 100 μM, after 6 h treatment by KS cells (a) and HT-29 cells (b)