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.
Coburn J, Leong JM, Erban JK.Coburn J, et al.Proc Natl Acad Sci U S A. 1993 Aug 1;90(15):7059-63. doi: 10.1073/pnas.90.15.7059.Proc Natl Acad Sci U S A. 1993.PMID: 8394007Free PMC article.
Coburn J, Cugini C.Coburn J, et al.Proc Natl Acad Sci U S A. 2003 Jun 10;100(12):7301-6. doi: 10.1073/pnas.1131117100. Epub 2003 May 14.Proc Natl Acad Sci U S A. 2003.PMID: 12748384Free PMC article.