CCL2 and infection: Because of the different composition of the extracellular milieu from Nil and HIV-infected tonsils (as here shown for suPAR, c-suPAR and CCL2/MCP-1 in the conditioned mediums collected after 9 and 12 days post-infection), we evaluated the contribution of suPAR and c-suPAR to the modulation of biological activities of CCS collected from uninfected and HIV-infected tonsil histocultures.