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. 2016 Jun 7;7:888. doi: 10.3389/fmicb.2016.00888

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Copyright © 2016 Yüksel, Power, Ribbe, Volkmann and Maier.

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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Competition dynamics between wt and Δrok in the presence of ampicillin (amp). Competitors were grown separately to T₂, diluted into fresh competence medium containing antibiotics as detailed in the graphs, and mixed in a 1:1 ratio. At t = 1 h, antibiotics were washed out and fresh competence medium was added. Upper graphs: growth curves (optical density of both competitors). Lower graphs: fraction of hyper-competent Δrok gfp (Bs141) cells competing against ΔcomK (Bs075, full lines, filled symbols) and Δrok gfp cells competing against wt (BD630, dotted lines, open symbols). Each graph is a representative result of at least three independent experiments.