Effect of PM
exposure on glucose homeostasis in KKay mice. (A-C), The change of blood glucose in Glucose tolerance test (GTT) in overnight fasted mice before (A) and after 5-week (B) or 8-week (C) of PM2.5 exposure. (D-F), Insulin tolerance test (ITT) in 4.5 hr fasted mice before (D) and after 5 wks (E) or 8 wks (F) of PM2.5 exposure. Bar graph is the AUC (area under curve) of the respective GTT or ITT curves. *P < 0.05, **P < 0.01 compared to respective FA group. n = 6-8 per group.