FIG. 2.
Total numbers of genes differentially expressed during HPIV1 infection and IFN-β treatment compared to mock infection over time (given in hours p.i.). Specifically, the numbers of genes that were significantly differentially expressed, in comparison to mock-infected cells, in cells infected with wt, CF170S, or P(C−) virus at 6, 12, 24, and 48 h p.i. or in IFN-β-treated A549 cells at 6 and 24 h p.i. are indicated. “Total” represents the cumulative numbers of genes differentially expressed taking all time points into consideration. Infection with CF170S or P(C−) virus led to a significant alteration of gene expression in many more genes than did infection with the wt or treatment with IFN-β.