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. 2019 Feb 18;9:2229. doi: 10.1038/s41598-019-38536-4

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Myoblast migration. Cell migration was evaluated in myoblasts incubated with menadione (MEN), ascorbic acid (AA), menadione combined with ascorbic acid (MEN + AA) or without treatment (CTR). Ascorbic acid was administered at 200 μM to AA and MEN + AA myoblasts, and menadione was administered at 10 µM to MEN and MEN + AA myoblasts. Myoblast migration was measured 0, 6, 12, 18, 24, 30 and 48 hours postwound. (A) Representative images of wound healing assay. The white dashed line delimits the wound area. The images were obtained under an inverted microscope at a 10x magnification (Bars: 100 µm). (B) Wound closure (reduction in wound area sizes over time). The data are expressed as a percentage and presented as the mean ± SD of duplicates from three independent cell cultures. (C) Migration rate (variation in wound closure over a time interval). The data are expressed as the fold change compared with the CTR group and presented as the mean ± SD of duplicates from three independent cell cultures. The different letters indicate significant differences among the groups (p < 0.05 - One-way ANOVA test, followed by Tukey’s multiple comparisons test).