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.
Fos expression in perifornical orexin neurons is higher during the night in rats maintained on a 12 hr LD cycle (ZT 3 through ZT 21 groups). In rats maintained in constant darkness (CT 3 and CT 15 groups), the percentage of double-labeling also is higher during the subjective night.
