CCL2 and HIV infectious disease: CCL2 production in both MDMs and HeLa cells was significant (Figure 1—figure supplement 1A, B and D), but the levels of CCL2 produced in CEM-CCR5 cells was below the level of detection – and we only detected miniscule amounts upon HIV infection or robustly only in samples where CCL2 was extraneously added (Figure 1—figure supplement 1C).