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. 2016 Feb 2;7:67. doi: 10.3389/fmicb.2016.00067

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Copyright © 2016 Alkhamis, Perez, Murtaugh, Wang and Morrison.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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PRRSV RFLP 1-7-4 cluster filtering. (A) Maximum likelihood tree of complete PRRSV sequence dataset (N = 6774) with the 1-7-4 cluster expanded. (B) The ML tree of extracted sequences containing the 1-7-4 cluster. Two nearest neighbor 1-7-4 RFLP types (green dots) were collected in August 2012 and March 2007. Two red dots indicated a 1-7-4 type isolated in January 2004 and a 1-4-4 type isolated in October 2006. The figure was generated from File S1.