CCL2 and infection: Expression of the chemokines genes (Ccl-2, >200-fold; csf2, >10-fold and Ccxl-10, ∼30-fold) and surface receptor molecules (FasL, >2.5 fold and IL-2R, 4-fold) were upregulated at the initial phase of infection, but decreased at later time points (Fig 10b, c).