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. 2015 May 8;13:152. doi: 10.1186/s12967-015-0499-8

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© Wang et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Representative SEM micrographs of PCL scaffolds after coating. The micrographs show the details of scaffolds after coating. A, PCL scaffolds only; B, PCL scaffolds with poly-lysine coating; C, PCL scaffolds with HAp; D, PCL scaffolds with HAp and 30 mg/ml collagen coating; E, PCL scaffolds with 10 mg/ml collagen coating; F, PCL scaffolds with 30 mg/ml collagen coating.