Figure 2.

NO metabolites in BAL fluid from asthmatic and control airways before (0 min), and 10 min or 48 h after segmental Ag challenge. NO in asthmatic or control BAL fluid did not change significantly with Ag challenge from baseline (all comparisons. P > 0.5). NO increases at 10 min and 48 h after Ag challenge in asthmatics, whereas NO did not change in control airways. SNO were undetectable in the asthmatic airway at baseline and 10 min after Ag challenge but increased at 48 h after Ag challenge.