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.
Relaxant effect of hydrogen peroxide in extrapulmonary (a) and intrapulmonary (b) arteries from wild-type mice exposed or not to hypoxia. The effect of hydrogen peroxide was studied in the absence or presence of 250 U ml−1 catalase, 300 μM L-NAME or 1 μM ODQ. In each panel, the response is expressed as the percentage of relaxation of the tone induced by PGF2α. **P<0.01, ***P<0.001: significant difference compared to controls (ANOVA). n=4–23.
