Figure 6From: Establishment of persistent infection with foot-and-mouth disease virus in BHK-21 cellsThe amounts of viral RNAs and the levels of viral RNA replication dynamics in different passages of BHK-Op cells. Viral RNAs of BHK-Op12, 18, 24, 30, 36, 42, 48, 54, 60, 66 were extracted to perform on duplex qRT-PCRs. (A) Quantitation of viral positive strands and negative strands. (B). The ratios of positive-stranded RNAs to negative-stranded RNAs.Back to article page