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.
Cumulative concentration-response curves to CCh in guinea pigs' trachea from Ctrl (a), Asth (b), and Asth+VCO4 groups (c), in the absence and presence of L-NAME. The symbols and vertical bars represent the mean and S.E.M., respectively (n = 5). Student's t-test: ∗p < 0.05 (Asth+L-NAME vs. Asth).
