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. 2019 Nov 14;12:539. doi: 10.1186/s13071-019-3789-9

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© The Author(s) 2019

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 — World Health Organisation bioassay kit and equivalent 3D printed parts. Cutaway shows the assembly of the 3D printed version of the slide unit. For illustration purposes, the WHO bioassay slide has been omitted but is visually identical to f