 Image Number K7069-1 |
Laboratory technician Deborah Lebo isolates E. coli bacteria from the stomach contents of cattle fed special diets.
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.