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.
Peifer M, McEwen DG.Peifer M, et al. Among authors: mcewen dg.Cell. 2002 May 3;109(3):271-4. doi: 10.1016/s0092-8674(02)00739-0.Cell. 2002.PMID: 12015976Free article.Review.