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. 2017 Oct 24;12:572. doi: 10.1186/s11671-017-2324-1

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© The Author(s). 2017

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 — a Cellular viability of A549 T in the presence of free MTX, free MTX and CS, and MTX-CS NGs in 48 h. b Cellular viability of Hela in the presence of free MTX, free MTX and CS, and MTX-CS NGs in 48 h. c Cellular viability of HUVEC in the presence of free MTX, CS, and MTX-CS NGs in 48 h