CCL2 and infection: The expression of IL-1β, IFN-α2, IFN-γ, TNF-α, MCP-1 (CCL2), IL-6, IL-8 (CXCL8), IL-10, IL-12p70, IL-17A, IL-18, IL-23, and IL-33 was assessed in apical washes at different time points after infection using a 13-plex immunoassay.