Data were analyzed by the ΔΔCt method with 18S as the HKG and are presented as fold change from vehicle-vehicle control. *, **, *** indicate significant difference from control (p ≤ 0.05, ≤ 0.01, and ≤ 0.001, respectively). n=6/group for Model 1 and n=5–7/group for Model 2. Abbreviations: PB: pyridostigmine bromide; PM: permethrin; DEET: N,N-Diethyl-methylbenzamide; DFP: diisopropylfluorophosphate; CORT: corticosterone; LNFPIII: lacto-N-fucopentaose III.