CD4 and infection: This was accompanied by changes in cytokine profiles and parasite loads which were dependent on the cell type (CD4+ T, CD8+ T, NK, NKT and γδ T cells), the organ (SI, PP, MLN, SPL and liver), the time-point (day 5 and 10 post-infection) and the cytokine (IFNγ, IL-4, IL-10 and IL-13) studied.