Figure 4

STS attenuates CS-mediated mucus hypersecretion in the airway. Comparison of levels of Muc5AC (A) and Muc5B (B) in BALF from CTL, CS, CS plus STS (CS + STS) and STS-treated mice. *P < 0.05and **P < 0.01 (n = 8–10 mice per group). STS, Sodium tanshinone IIA sulfonate; CS, cigarette smoke.