Dynamics of M1 and M2-related chemokines in macrophages during S. japonicum infection. Peritoneal macrophages were purified from normal or S. japonicum infected mice at indicated time points post-infection. Expression of CXCL9, CXCL10, CXCL11 (A), CCL2, CCL17, CCL22 (B) mRNA was evaluated by real-time PCR. Transcript levels for each chemokine in macrophages are expressed as fold change over transcript levels in macrophage from normal mice (0 week). Data are expressed as the mean ± SD of three independent experiments with 6 mice per group in each experiment.