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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/).
Mouse embryonic fibroblasts L929 growing on the surface of (a) pristine polytetrafluoroethylene and (b) polytetrafluoroethylene coated by Au nanolayer. Images were taken by fluorescent microscope at magnification of 40×.