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.
Pull SL, Doherty JM, Mills JC, Gordon JI, Stappenbeck TS.Pull SL, et al. Among authors: mills jc.Proc Natl Acad Sci U S A. 2005 Jan 4;102(1):99-104. doi: 10.1073/pnas.0405979102. Epub 2004 Dec 22.Proc Natl Acad Sci U S A. 2005.PMID: 15615857Free PMC article.