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. 2012 Jun 5;4(6):940–953. doi: 10.3390/v4060940

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© 2012 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Phylogenetic analysis of Potato spindle tuber viroid (PSTVd) sequence variants. (A) Phylogenetic tree of PSTVd variants from plant one. (B) Phylogenetic tree of PSTVd variants from plant two. The analyses and tree constructions were conducted as described in Figure 3.