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. 2017 Dec 29;16:497. doi: 10.1186/s12936-017-2146-8

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© The Author(s) 2017

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. 2 — Levels of IgG responses to P. falciparum and P. vivax as function of time of follow-up. Longitudinal fluctuation of antibody levels is plotted in part a as histogram + SE for each Ag in May 2010 (white), November 2010 (light grey), May 2011 (dark grey), November 2011 (black). Asterisks indicate significant different level of Ab (P < 0.05, Wilcoxon signed rank test). In panel b, antibody levels for all positive responders (individuals with ODratio > 2) to PvMSP1 (black), PfMSP1p19 (light grey), SE (dark grey) are shown as histogram plots + SE for each set of samples from May 2010 to November 2011. IgG levels of positive controls are also shown for comparison