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.
Hitchcock AL, Auld K, Gygi SP, Silver PA.Hitchcock AL, et al. Among authors: silver pa.Proc Natl Acad Sci U S A. 2003 Oct 28;100(22):12735-40. doi: 10.1073/pnas.2135500100. Epub 2003 Oct 13.Proc Natl Acad Sci U S A. 2003.PMID: 14557538Free PMC article.