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. 2015 Aug 26;16(1):637. doi: 10.1186/s12864-015-1869-6

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© Li et al. 2015

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 5 — Lp exposed to water is more resistant to antibiotics. CFU changes of Lp cultured in AYE broth or exposed to Fraquil at 25 or 37 °C after antibiotic treatments. The antibiotics used include ampicillin, erythromycin, gentamycin and kanamycin, all at 100 μg/ml. 5X indicates a five times concentration of erythromycin and gentamycin (500 μg/ml) were used as well. The data are expressed as the log transformation of CFUs in treated wells (CFU_T) divided by the CFUs in the control wells without antibiotics (CFU_C). A negative value indicates a CFU reduction upon treatment. Data shows the mean +/− SD of three biological replicates. Different letters on the bars indicate significant differences between different samples in a particular treatment according to Tukey's test (p < 0.05). CFU changes between different treatments were not compared