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.
(A) The color background of the Griess reagent on the PADs as a function of time at room temperature (closed circles, ⚫) and 4 ºC (open circles, ⚪) (n=8) (B) Nitrite concentration on PADs as a function of storage time calculated from analytical calibration (n=6).
