TLR2 and infection: However, IL-6 and TNF-α expression in infected wild-type DCs decreased significantly with DenV2 infection, in comparison with infected TLR2-deficient DCs (227 ± 16 vs. 178 ± 11 for IL-6 MFI in BL/6 and TLR2 KO; 259 ± 9 vs. 218 ± 11 for TNF-α MFI in BL/6 and TLR2 KO).