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.
Bacher JM, de Crécy-Lagard V, Schimmel PR.Bacher JM, et al.Proc Natl Acad Sci U S A. 2005 Feb 1;102(5):1697-701. doi: 10.1073/pnas.0409064102. Epub 2005 Jan 12.Proc Natl Acad Sci U S A. 2005.PMID: 15647356Free PMC article.
Bacher JM, Schimmel P.Bacher JM, et al.Proc Natl Acad Sci U S A. 2007 Feb 6;104(6):1907-12. doi: 10.1073/pnas.0610835104. Epub 2007 Jan 30.Proc Natl Acad Sci U S A. 2007.PMID: 17264207Free PMC article.