TLR2 and Increased total eosinophil count: Results in Figure 5 show that exposure to upLPS during allergen sensitization inhibited Bt-induced total leukocyte influx to BAL and BAL eosinophilia in WT and TLR2-deficient but not TLR4-deficient mice (Fig. 5A and 5B) indicating that upLPS preparation signals via TLR4 but not TLR2.