BMMC were pretreated for 24 hours with media or lactic acid then activated with IL-33 at 200ng/mL for 5 minutes. Lysates were analyzed by western blotting to measure expression and phosphorylation of the indicated proteins. Representative blots are shown on the left, while bar charts show mean ± SEM of phospho-protein:total protein ratios calculated using the LI-Cor Odyssey software Image Studio 4.0. Results shown are representative of three experiments done in triplicate. *, p<0.05; **, p<0.01; ***, p<0.001; ****, p<0.0001; NS, not significant.