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). This evidence concerns the gene IFNG and infection.