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. 2018 Nov 2;19(11):3453. doi: 10.3390/ijms19113453

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© 2018 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 phase-contrast images of ECFCs (A), HUVECs (B), and CD45⁺ cells (C) during a 16-h culture in Matrigel, 50×. D. Semi-quantitative image analysis of a tube formation assay (n = 5 images per group). * p < 0.05.