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.
Lai Y, Chu L.Lai Y, et al. Among authors: chu l.Appl Environ Microbiol. 2008 Jan;74(1):73-9. doi: 10.1128/AEM.01972-07. Epub 2007 Nov 2.Appl Environ Microbiol. 2008.PMID: 17981934Free PMC article.