Figure 3From: Effects of ribavirin on the replication and genetic stability of porcine reproductive and respiratory syndrome virus Assessment of the growth kinetics of ribavirin-resistant mutants in the presence of ribavirin. The growth kinetics of two ribavirin-resistant PRRSV mutants (RVRp13 and RVRp22) were evaluated in MARC-145 cells in the presence of several concentrations of ribavirin compared to their parental strain VR2332.Back to article page