An official website of the United States government
Here's how you know
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.
Intact and degraded prophage regions identified by several approaches in the pathogenic Escherichia coli O157:H7 strain Sakai (left) and the benign laboratory strain K-12 MG1655 (right).