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. 2016 Dec 8;8(12):425. doi: 10.3390/polym8120425

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© 2016 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Representative photographs showing calcium mineralization (before staining) on PEEK/(0.93% MWNT), PEEK/(15% nHA)-(0.93% MWNT) and PEEK/(15% nHA)-(1.88% MWNT) nanocomposites cultured with murine MC3T3-E1 pre-osteoblasts for 28 days (top); Calcified nodules appeared as a dark red color on these samples after staining with Alizarin red-S (bottom).