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. 2018 Jan 11;13:15. doi: 10.1186/s11671-018-2432-6

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© The Author(s). 2018

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. 2 — a Optical image of the synthesized nHAC/PLGA/GO scaffolds with different amount of GO. b–e SEM images of b nHAC/PLGA, c nHAC/PLGA/GO (0.5 wt%), d nHAC/PLGA/GO (1.0 wt%), and e nHAC/PLGA/GO (1.5 wt%) scaffolds. f Hole distribution of nHAC/PLGA/GO(0, 0.5, 1.0, and 1.5 wt%)