Mindful that the expression of chemokines and cytokines in the serum does not allow the localization of chemokine/cytokine producing cells, we used quantitative RT-PCR to determine the relative expression of Ifng, CXCL10, CCL2 and CLL7 in spleen versus BM during infection with P. chabaudi (Figure 7A). Here, CXCL10 is linked to infection.