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. 2016 Aug 2;14:41. doi: 10.1186/s12958-016-0174-9

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© The Author(s). 2016

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 — Example of presence versus absence of nuptial pads on DGFs. Panel a: male with darkened patch on front digit typical of nuptial pad, as indicated by arrow. Panel b: female with no nuptial pad/dark patch on front digit. However, as can be seen in Panel b, females have spot patterns on their digits, which can, in some cases, complicate nuptial pad identification