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. 2013 Jun 1;9:38. doi: 10.1186/1746-4269-9-38

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Copyright © 2013 Arellanes et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Trade routes of edible plants species at Tehuacán-Cuicatlán Valley. Edible plant species came from the forest, agroforestry system (AFS) and from home gardens and are produced at low scale. Gray area corresponds to the analysis of this study. 1 = interchange between village inhabitants through barter or commercialization, 2 = plants taken to the market by village inhabitants and exchanged for money or other products, 3 = Plants exchanged for money or other products by middlemen inside villages, 4 = Plants collected at villages and offered directly by middlemen or wholesalers who exchange only for money at the market.