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. 2016 Apr 1;2(4):e1501675. doi: 10.1126/sciadv.1501675

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Copyright © 2016, The Authors

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

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Fig. 1 — Tx2 TCLs (n = 29) are landscapes that have the potential to double the wild tiger population by 2022. One Tx2 TCL in the transboundary region of Russia and China is shown in the inset (top right corner). Each TCL has a unique ID, from 1 to 76 (table S1).