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. 2015 Sep 2;10(9):e0136691. doi: 10.1371/journal.pone.0136691

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© 2015 Gaimster, Summers

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 4 — A culture of growing BW25113 in LB medium with 0 or 0.5 mM tryptophan added was sampled regularly. The supernatant was assayed for external indole using Kovacs assay (panel A) and the cell pellet was assayed for indole using Kovacs assay (panel B). Data shown are the mean values ± standard deviation for three independent repeats.