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.
Volume of water (open circles) and concurrently available 10-percent alcohol solution (closed circles) consumed by 18 alcohol-preferring rats during 32 days of chronic alcohol drinking. Data shown are averages for consecutive 2-day periods. The increase in alcohol intake over successive days in these rats is consistent with the development of tolerance.
