CD4 and infection: We did not observe a change in the frequency of IFN-γ-producing CD4+ (Figure 3A, representative dotplots in Figure 3C for naive and Figure 3D for infected mice) and CD8+ T cells (Figure 4A, representative dotplots in Figure 4C for naive and Figure 4D for infected mice) in comparison to naïve mice suggesting that infection was not priming the cells to produce IFN-γ.