 Image Number K8579-12 |
Animal physiologist Robert Matteri examines the growth of bacterial cultures containing cloned DNA of genes for appetite control.
Photo by Keith Weller.
An official website of the United States government
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.