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.
Michaels JA, Schaffelhofer S, Agudelo-Toro A, Scherberger H.Michaels JA, et al.Proc Natl Acad Sci U S A. 2020 Dec 15;117(50):32124-32135. doi: 10.1073/pnas.2005087117. Epub 2020 Nov 30.Proc Natl Acad Sci U S A. 2020.PMID: 33257539Free PMC article.