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. 2021 Nov 18;11:22494. doi: 10.1038/s41598-021-01975-z

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© The Author(s) 2021

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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DPPH /ABTS+ scavenging (%). DPPH/ABTS+ scavenging (%) at different concentrations (µM) of CBD (a) and CBDV (b) as determined by DPPH and ABTS assays. The results are expressed as the means ± standard deviations obtained from five independent experiments. Dunnett's multiple comparison test was performed with OD values of the negative control (0 µM) and all other tested concentrations: *p < 0.05, **p < 0.001, ***p < 0.0001. The percentage of free radicals scavenged by CBD (a₁) and CBDV (b₁) is reported in concentration [µM]-effect curves.