MAPK8 and infection: However, in quantitative Western blot experiments involving infection of BMMΦs with MCMV, MCMVdie1 or MCMVrev analysis of IκBα, p38 and JNK proteins and their phosphorylated forms (Figure 6A) reveals that at 10 hpi there are no significant differences between the three different viruses tested (for quantification see Figure S7).