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. Author manuscript; available in PMC: 2014 Feb 10.
Published in final edited form as: J Gen Virol. 2011 Nov 30;93(0 3):504–515. doi: 10.1099/vir.0.038398-0

Fig. 7.

Fig. 7

Spread and growth properties of second site revertants in BHK-21 cells. Foci morphology (a) and infectivity titres (b) were determined using a focus forming assay. BHK-21 cells were infected (m.o.i. of 0.01) and samples were taken at different times. All data points represent mean values from two independent experiments. Error bars indicate SD.