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. 2020 Nov 6;3:652. doi: 10.1038/s42003-020-01373-7

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — FISH signals of the 18S–28S rRNA genes (arrowheads) are shown for chromosomes prepared from a male (a) and a female (b) of the brownbanded bamboo shark, a male (c) and a female (d) of the whitespotted bamboo shark and a female of the zebra shark (e). FISH signals of telomeric repeats (red) are shown for chromosomes prepared from a male of the brownbanded bamboo shark (f), a male of the whitespotted bamboo shark (g) and a female of the zebra shark (h). Arrows indicate putative sex chromosomes. Scale bars represent 10 μm.