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.
Ramette A, Tiedje JM.Ramette A, et al. Among authors: tiedje jm.Microb Ecol. 2007 Feb;53(2):197-207. doi: 10.1007/s00248-005-5010-2.Microb Ecol. 2007.PMID: 17106806Review.