Since MIP-3α production was associated with the memory response to recall antigens (Figure 1, Figure 2, Figure 3 and Figure 4) that is progressively lost in the course of HIV infection, and since we have shown that MIP-3α has HIV-inhibitory activity [26], we evaluated the production of this chemokine in supernatants from antigen-activated PBMCs that we had previously prepared in the course of a cross-sectional study of an HIV cohort [4]. The gene discussed is CCL20; the disease is HIV infectious disease.