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.
Agarose gel electrophoresis analysis of PCR product of napA gene from H pylori clinic strains. Lane 1: DL2000 DNA marker; Lanes 2-9: napA gene (435 bp) from eight H pylori clinic strains.