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. 2018 Oct 25;19(11):3327. doi: 10.3390/ijms19113327

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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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Effect of E. officinalis on the generation of reactive oxygen species (ROS) in UVB-irradiated normal human dermal fibroblasts (NHDFs). (A) ROS levels in NHDFs were determined after 24 h of UVB radiation with and without E. officinalis treatment. The number of cells is plotted versus the dichlorofluorescein fluorescence detected by the FL-2 channel; (B) The relative ROS generated by NHDFs is shown. Values are means ± SD. *** p < 0.001 versus the non-irradiated control. # p < 0.05 and ## p < 0.01 versus the UVB-irradiated control.