Figure 2. Effect of G protein deletion on type I IFN secretion.

A549 cells were infected with rhMPV-WT or rhMPV-ΔG, at MOI of 2, and harvested at 6, 15 and 24 h p.i. to measure secretion of IFN-α and IFN-β in cell supernatants by ELISA. Data shown are representative of three independent experiments. *, P<0.05 relative to rhMPV-WT.