The present article describes the steps required to isolate and characterize RNA polymerase fidelity variants of RNA viruses and how to use mutation frequency data to confirm fidelity changes in tissue culture.
Beaucourt, S., Bordería, A. V., Coffey, L. L., Gnädig, N. F., Sanz-Ramos, M., Beeharry, Y., Vignuzzi, M. Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency. J. Vis. Exp. (52), e2953, doi:10.3791/2953 (2011).