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. 2017 Jan 23;18(1):229. doi: 10.3390/ijms18010229

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© 2017 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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Water contact angles on pristine Ti; hBMP-2/Ti; hGDF-5/Ti, and hBMP-2/hGDF-5/Ti samples. The error bars represent mean ± SD (n = 3). This experiment was repeated three times (* p < 0.05).