Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Effect of L-NAME on vagally-induced bronchoconstriction in guinea pigs 3 days after a 4-hour exposure to 2 ppm ozone. Upward triangles = bronchoconstriction before L-NAME; downward triangles = bronchoconstriction 30 minutes after L-NAME. Data are mean ± SEM. Ozone day 3 + L-NAME (n = 4). * = P < 0.05 by repeated measures two-way ANOVA.
