CCL15 and infection: The infection of MDMs with Mtb opsonized with hSAA-1, compared to the infection with nonopsonized bacilli, led to at least a 2-fold increase in the concentrations of CSF2, CSF3, IL-1α, IL-1β, IL-6, IL-12, CCL15, and TNF-α with the most potent 10-fold increase observed for CCL5.