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.
Wittmann MJ, Bergland AO, Feldman MW, Schmidt PS, Petrov DA.Wittmann MJ, et al.Proc Natl Acad Sci U S A. 2017 Nov 14;114(46):E9932-E9941. doi: 10.1073/pnas.1702994114. Epub 2017 Oct 30.Proc Natl Acad Sci U S A. 2017.PMID: 29087300Free PMC article.