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.
PFGE genotyping. The dendrogram and PFGE patterns of SmaI-digested DNA from 15 C. botulinum type B strains are shown. Arrowheads indicate the DNA fragment containing the boNT/B gene detected by Southern blot hybridization.