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.
Nucleotide sequences of vacA d1 or d2 region from eight strains. Strains Tx30a and OK180 have the vacA d2 genotype; and strains 26695, NATC11637, F-71, 249a3, ATCC 49503, and J99 have the vacA d1 genotype. The vacA d2 genotype had a 69- to 81-bp deletion between the vacA i and m regions.
