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. 2014 Oct 24;5:554. doi: 10.3389/fmicb.2014.00554

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Copyright © 2014 Line, Alhede, Kolpen, Kühl, Ciofu, Bjarnsholt, Moser, Toyofuku, Nomura, Høiby and Jensen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Fluorescence of denitrification reporter promoters of P. aeruginosa PAO1 during anoxic growth with 0 or 400 μM NO⁻₃. (A) narK₁-eGFP, (B) nirS-dsredexpress, (C) norC-eGFP, (D) nosZ-dsredexpress. Mean ± s.e.m. as measured by flow cytometry from triplicates. eGFP was detected in FL-1-A, DsRed-Express was detected in FL-2-A. Bars above represent the period of time of significant increase p ≤ 0.05.