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. 2017 Jul 3;12(7):e0180087. doi: 10.1371/journal.pone.0180087

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© 2017 Magennis 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 credited.

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Fig 3 — Binding of coumarin 343-tagged a) cationic (3)_25-100% and b) sulfobetaine (4)_25-100% polymers at different degrees of functionalization, to E. coli and S. mutans in bacterial suspensions of OD₆₀₀ 0.1, and 1.0 mg mL^-1 polymer solutions. Area of fluorescence (%) was quantified using ImageJ. Error bars represent standard deviations on independent experiments (N = 3). Fluorescence micrographs are shown for fully functionalised (c, d) cationic and (e, f) sulfobetaine polymers, (3)_100% and (4)_100%, respectively using the 488 nm (green) channel.