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.
Zhao X, Rothstein R.Zhao X, et al.Proc Natl Acad Sci U S A. 2002 Mar 19;99(6):3746-51. doi: 10.1073/pnas.062502299.Proc Natl Acad Sci U S A. 2002.PMID: 11904430Free PMC article.
Zhao X, Blobel G.Zhao X, et al.Proc Natl Acad Sci U S A. 2005 Mar 29;102(13):4777-82. doi: 10.1073/pnas.0500537102. Epub 2005 Feb 28.Proc Natl Acad Sci U S A. 2005.PMID: 15738391Free PMC article.