At 24 h pi, SOCS1 protein expression levels were similar following infection with RSV or RSV mutant viruses; however SOCS3 protein expression was significantly (p < 0.05) higher in ΔG virus infected cells compared to WT infected cells, and substantially higher compared to ΔNS/2 virus infected cells (Figure 2A). This evidence concerns the gene SOCS1 and infection.