Concentrations of IL-6, IL-12, and TNFα in culture supernatants or mouse sera were determined by quantitative ELISA using cytokine-specific coating Abs and biotinylated detection Abs (eBioscience) as previously described (10 (link), 22 (link)). Mouse serum levels of IL-10 and IL-1β were analyzed by ELISA using cytokine-specific coating Abs and biotinylated detection Abs (R&D) as previously described (10 (link), 22 (link)). Levels of IFN-β in mouse sera were measured using the VeriKine-HS Mouse Interferon Beta Serum ELISA Kit (PBL Assay Science, Piscataway, NJ) following the manufacturer’s protocol.