Red lines represent inhibition, green lines enhancement. Tick saliva inhibits production of IL-6, IL-12, TNF, IFN-β, and RANTES cytokines. It also inhibits expression of CCR5 and CCR7, DC migration, proliferation, maturation, and phagocytosis, and STAT-1, PI3K/Akt, Erk1/2, and NF-κB signaling pathways. The saliva induces Th2 polarization while suppressing Th1 and Th17 differentiation.