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. 2015 May 6;3(5):e12376. doi: 10.14814/phy2.12376

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© 2015 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of the American Physiological Society and The Physiological Society.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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PCA of neighboring Andean populations. Circles denote individuals from Mao et al. (2007); triangles refer to this study, diamonds to Eichstaedt et al. (2014), and rectangles to Reich et al. (2012). (A) Samples overlap but cluster roughly according to geographic origin: populations in the left circle stem from Peru (HA), in the bottom circle from Bolivia and Chile and in the right circle from Argentina (HA and IA). Due to unknown precise sampling locations Quechua individuals sampled by Reich et al. (2012) cannot be assigned to one specific country. However, it is likely that Quechua from Peru cluster with Peruvian Quechua sampled by Mao et al. (2007) and Quechua from Bolivia overlap with Bolivian Aymara. (B) The same samples except for Quechua and Aymara from Reich et al. (2012) with unclear geographic origin were included, showing a clustering by geographic origin apart for one Peruvian Quechua individual.