Fig. 1. Exhaled nitric oxide (parts per billion) measured 6 h after rats were administered lipopolysaccharide or saline (control). Control and lipopolysaccharide-exposed rats were concurrently administered saline, L-NIL, L-NAME, or dexamethasone (dexa). *Denotes significant (  P < 0.05) increase from untreated control. #Denotes significant (  P < 0.05) decrease from untreated lipopolysaccharide. Data are expressed as the mean ± SD.