Emerging Infectious Disease ISSN: 1080-6059

Porcine Reproductive and Respiratory Syndrome Virus: Origin Hypothesis

Peter G.W. Plagemann*

Author affiliation: *University of Minnesota, Minneapolis, Minnesota, USA

Figure 4

Nucleotide alignment of a segment of open reading frame (ORF) 1b of lactate dehydrogenase-elevating virus–P, porcine reproductive and respiratory syndrome virus VR-2332, and porcine reproductive and respiratory syndrome virus–Lelystad virus beginning at nucleotides 1169, 1165, and 1165, respectively. *Indicates identical nucleotides. Degenerate primer sets for polymerase chain reaction were previously made to the underlined segments (41).

Figure 4. Nucleotide alignment of a segment of open reading frame (ORF) 1b of lactate dehydrogenase-elevating virus–P, porcine reproductive and respiratory syndrome virus VR-2332, and porcine reproductive and respiratory syndrome virus–Lelystad virus beginning at nucleotides 1169, 1165, and 1165, respectively. *Indicates identical nucleotides. Degenerate primer sets for polymerase chain reaction were previously made to the underlined segments (41).

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