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. 2015 Aug 12;14:119. doi: 10.1186/s12934-015-0310-9

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© Chen at al. 2015

Open AccessThis 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. 2 — Effect of Tween 40 addition (0–8 mg/mL Tween 40, after 36 h incubation time) and addition time (0–48 h, 5 mg/mL Tween 40) on l-Arg production in CCM01 strain. l-Arg production and the DCW were monitored during shake flask cultivation for 120 h by Tween 40 addition. Results are the means ± standard deviations from three independent experiments. Compared with the control group, “ns” designates P > 0.05, *P < 0.05; **P < 0.01; ***P < 0.001.