An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Robles-Price A, Wong TY, Sletta H, Valla S, Schiller NL.Robles-Price A, et al. Among authors: schiller nl.J Bacteriol. 2004 Nov;186(21):7369-77. doi: 10.1128/JB.186.21.7369-7377.2004.J Bacteriol. 2004.PMID: 15489449Free PMC article.