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.
Houghton JL, Zeglis BM, Abdel-Atti D, Aggeler R, Sawada R, Agnew BJ, Scholz WW, Lewis JS.Houghton JL, et al.Proc Natl Acad Sci U S A. 2015 Dec 29;112(52):15850-5. doi: 10.1073/pnas.1506542112. Epub 2015 Dec 14.Proc Natl Acad Sci U S A. 2015.PMID: 26668398Free PMC article.