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Bayesian Skyline plots (BSP) illustrating temporal changes in the relative genetic diversity of Porcine Reproductive and Respiratory Syndrome Virus RFLP type 1-7-4 isolated between September 2003 and March 2015 in the United States estimated from the ORF5 gene sequences. Line plots summarize estimates of the effective population size (NeT), a measure of genetic diversity, for ORF5 gene segment; the shaded regions correspond to the 95% HPD (Upper, Red; Median, Blue; Lower, Green).
