Fig 5. IFN induction by VEEV mutants.
MEF cells were infected with indicated viruses (M.O.I = 5) and supernatants were collected at early (A) or late (B) times p.i. IFN bioassays were performed as described in Materials and Methods to determine secreted IFN levels. ****, P<0.0001 using Two way ANOVA. Ns = not significant. Data is the representative of at least two independent experiments for each virus. All error bars are standard deviations.