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. 2019 Feb 23;17:32. doi: 10.1186/s12951-019-0460-8

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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. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Time-dependent ROS production on untreated and treated NIH3T3 fibroblasts with carbon-based nanomaterials (MWCNTs and GFs) after 2 h and 24 h. GFs induced greater production of ROS in cells than MWCNTs. Significant at p < 0.05, n: 1000 points per group, t-test