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. 2015 Dec 16;16:1068. doi: 10.1186/s12864-015-2275-9

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© Harke and Gobler. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Photosynthetic efficiency, chlorophyll, and microcystin trends during the experiment. Photosynthetic efficiency (a), total chlorophyll a (b) and microcystin (MC-LR equivalents) concentrations per cell (c) during the experiment. Nitrogen refeed occurred on day 5. Error bars represent the standard deviation between biological replicates (n = 3). Stars indicate significant differences between treatments (p <0.001, two-way ANOVAR)