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.
Panel A: Cumulative concentration-response curve for sildenafil citrate from 10-7 M to 10-3 M compared to vehicle at a submaximal U46619 induced contraction, in the presence and absence of L-NAME. *P < 0.05 compared to baseline. Panel B: Histogram of concentration dependent relaxation for sodium nitroprusside in the presence of increasing concentrations of sildenafil citrate. †P < 0.05 compared to control.
