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.
Devine EL, Oprian DD, Theobald DL.Devine EL, et al. Among authors: oprian dd.Proc Natl Acad Sci U S A. 2013 Aug 13;110(33):13351-5. doi: 10.1073/pnas.1306826110. Epub 2013 Jul 31.Proc Natl Acad Sci U S A. 2013.PMID: 23904486Free PMC article.
Yang T, Snider BB, Oprian DD.Yang T, et al. Among authors: oprian dd.Proc Natl Acad Sci U S A. 1997 Dec 9;94(25):13559-64. doi: 10.1073/pnas.94.25.13559.Proc Natl Acad Sci U S A. 1997.PMID: 9391065Free PMC article.