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. 2019 Sep 27;12(19):3166. doi: 10.3390/ma12193166

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© 2019 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/).

PMC Copyright notice

Phase-contrast images of fibroblast cells at 48 h after cultured on unrubbed (left) and rubbed (right) surface of a synthetic fluorinated polyimide (6FDA-6FAP). Adapted from [53], with permission from © 2002 Elsevier.