CD83 and infection: Total spleen cells from single P. berghei, single B. duttonii and co-infected mice (N = 6 from each infection type and time point) were isolated at day 0–5 p.i. Dendritic cells (DCs) and macrophages (MΦ) were analyzed for expression of the cells surface markers MHCI and MHCII, and the co-stimulatory molecules CD83 and CD86 (Figures 4 and 5).