ITGAM and infection: To identify pathway(s) possibly involved in the recruitment of liver CD11b+Ly6C+ monocytic cells, a custom in-house developed mRNA array was used to screen for the expression of chemokine genes in total liver extracts at day 6 post infection, i.e. when the first most important peak of parasitemia and the highest expansion of CD11b+Ly6C+ monocytic cells in the liver (reaching 27.8±2.5% within liver non-parenchymal cells in infected animals versus 2.1±0.3% in non-infected mice) occur [8].