Figure 1From: A multiplex PCR assay for the detection of five influenza viruses using a dual priming oligonucleotide systemOptimized number of poly (I) linkers in DPO primer design for sH1N1, H1N1pdm09, H3N2, H5N1 and FluB by multiplex DPO PCR. Lane 1: negative control; Lane 2–7: three to eight polydeoxyinosine (I) linkers in DPO primers tested for each target virus; Lane M: DNA marker.Back to article page