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.
Briggs DE, Siveter DJ, Siveter DJ, Sutton MD, Legg D.Briggs DE, et al.Proc Natl Acad Sci U S A. 2016 Apr 19;113(16):4410-5. doi: 10.1073/pnas.1600489113. Epub 2016 Apr 4.Proc Natl Acad Sci U S A. 2016.PMID: 27044103Free PMC article.
Briggs DE, Siveter DJ, Siveter DJ, Sutton MD, Garwood RJ, Legg D.Briggs DE, et al.Proc Natl Acad Sci U S A. 2012 Sep 25;109(39):15702-5. doi: 10.1073/pnas.1205875109. Epub 2012 Sep 11.Proc Natl Acad Sci U S A. 2012.PMID: 22967511Free PMC article.