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. 2020 Oct 5;375(1812):20190578. doi: 10.1098/rstb.2019.0578

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© 2020 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 3. — PCoA ordination of species-level Bray-Curtis distances. Extraction blank controls (EBCs, grey crosses), cluster separately from the rest of the ancient and modern oral samples. Ancient Japanese dental calculus samples (black circles) cluster with the El Sidron Neanderthal samples (yellow triangles). Modern dental plaque samples from the Human Microbiome Project (blue squares), and a modern dental calculus sample (blue triangle) cluster separately from ancient dental calculus samples, with the exception of one Edo period Japanese sample (18022_Japan_Edo_3). One Jomon sample (A18019_Japan_Jomon_5) is also pulled towards the EBCs (asterisk).