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.
Lack of NO production in retinal arterioles in response to ET-1. Control (n = 4) and L-NAME pretreated (n = 4) vessels with intact endothelium and resting tone were exposed to increasing concentrations of ET-1 for 5 minutes at each concentration.
