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.
Swaney WT, Curley JP, Champagne FA, Keverne EB.Swaney WT, et al. Among authors: curley jp.Proc Natl Acad Sci U S A. 2007 Apr 3;104(14):6084-9. doi: 10.1073/pnas.0609471104. Epub 2007 Mar 26.Proc Natl Acad Sci U S A. 2007.PMID: 17389373Free PMC article.