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. 2019 Jul 2;9:9554. doi: 10.1038/s41598-019-45840-6

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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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Bacterial survival curve of Escherichia coli K12A15 strain () grown overnight in LB medium, with added concentrations of 0.1 mg/ml () and 1 mg/ml () of the pigment produced by Microbacterium sp. LEMMJ01 (). To compare the resistance between the two bacterial species with or without the pigment produced by Microbacterium sp. against UV-B radiation. Stationary growth phase cultures were irradiated with increasing doses of UV-B (312 nm) and aliquots were withdrawn at different times and plated to determine survival. The asterisks represent a significant difference (P < 0.005) between the survival of E. coli with and without pigment after the dose of UV-B irradiation as assessed by Student’s t-test. Error bars represent the standard deviation of the counts of at least three independent experiments.

Inline graphic — Bacterial survival curve of Escherichia coli K12A15 strain () grown overnight in LB medium, with added concentrations of 0.1 mg/ml () and 1 mg/ml () of the pigment produced by Microbacterium sp. LEMMJ01 (). To compare the resistance between the two bacterial species with or without the pigment produced by Microbacterium sp. against UV-B radiation. Stationary growth phase cultures were irradiated with increasing doses of UV-B (312 nm) and aliquots were withdrawn at different times and plated to determine survival. The asterisks represent a significant difference (P < 0.005) between the survival of E. coli with and without pigment after the dose of UV-B irradiation as assessed by Student’s t-test. Error bars represent the standard deviation of the counts of at least three independent experiments.