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.
van Gelderen P, Ramsey NF, Liu G, Duyn JH, Frank JA, Weinberger DR, Moonen CT.van Gelderen P, et al. Among authors: duyn jh.Proc Natl Acad Sci U S A. 1995 Jul 18;92(15):6906-10. doi: 10.1073/pnas.92.15.6906.Proc Natl Acad Sci U S A. 1995.PMID: 7624341Free PMC article.