However, this was not the case, since we corroborated our main findings by infecting mice with wt MCMV: Il10−/− mice harbored reduced virus loads 2 weeks post infection and virus-specific CD4 T cell priming was significantly increased in Il10−/− mice compared to B6 mice already at day 5.5 post infection (Figure S8). This evidence concerns the gene IL10 and infection.