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. 2019 Apr 10;11(4):653. doi: 10.3390/polym11040653

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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/).

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Optical microscopic photographs of NHDF cells in the presence of the each of the produced fibrous meshes after one, three and seven days of incubation. K⁻, negative control; K⁺, positive control. Original magnification, 100×.