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. 2016 Mar 1;11:122. doi: 10.1186/s11671-016-1337-5

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© Wu et al. 2016

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 — Cytotoxicity of polyplexes at various concentrations in a HeLa, b HepG2, and c NIH 3T3 cells. The cells were incubated using different polyplexes for a time period of 24 h (mean ± SD, n = 6)