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. 2004 Oct;68(4):259–266.

Figure 2.

Figure 2

Detection by reverse transcription-polymerase chain reaction (RT-PCR) of porcine reproductive and respiratory syndrome virus (PRRSV) (open reading frame [ORF] 5) in sera collected from pigs orally exposed to PRRSV-positive meat samples. Lanes M: 100 base pairs (bp) DNA ladder; lane 1: original meat sample number 960; lanes 2 and 3: day 0; lanes 4 and 5: day 7 post exposure (pe); lanes 6 and 7: day 14 pe; lanes 8 and 9: day 20 pe; lane 10; negative control; and lane 11: positive PRRSV control.