Figure 2. NAC reduces AHR in asthma exacerbation with/out Dex. AHR was studied using Flexivent apparatus and increasing doses of Mch. Airway resistance (Rn) (a), Tissue damping (b) and tissue elastance (c) were decreased to the control levels in asthma exacerbation with NAC application (320 mg/kg every 12 hours). *p<0.05, as compared to respective controls.