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. 2020 Feb 20;18(2):127. doi: 10.3390/md18020127

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© 2020 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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Dose-dependent effect of 1, 2 and penicillic acid (PA) on QS-dependent bioluminescence of: A) The LuxR-based reporter E. coli pSB401 induced by OXO-C6-AHL; B) The LasR-based reporter E. coli pSB1075 induced by OXO-C12-AHL. Data are expressed as SD of mean (n = 3). * P < 0.05 versus control by ANOVA followed by Bonferroni posttest. The average bioluminescence observed for the negative control is shown by a line representing the degree of luminescence when ran without any inhibitory molecule but with its cognate AHLs.