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. 2015 Jul 31;10(7):e0134374. doi: 10.1371/journal.pone.0134374

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© 2015 Romsang et al

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 7 — Plate sensitivity assays were performed to determine the levels of resistance of P. aeruginosa PAO1 and fprB mutant harboring empty vector (pBBR), pFprB, or pISC strains under conditions of either high sodium (NaCl, 0.5 M) or high potassium (KCl, 0.5 M) salts with/without ferrous (FeSO₄, 50 μM) or ferric (FeCl₃, 50 μM) supplementation. The data shown are the means and SD of percent survival at 18 h incubation from three independent experiments. The asterisk indicates a statistically significant difference (P < 0.01) compared to those of the PAO1/pBBR strain.