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.
Bell CR, Albright LJ.Bell CR, et al. Among authors: albright lj.Appl Environ Microbiol. 1982 Jun;43(6):1227-37. doi: 10.1128/aem.43.6.1227-1237.1982.Appl Environ Microbiol. 1982.PMID: 16346023Free PMC article.