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.
DiRita VJ, Parsot C, Jander G, Mekalanos JJ.DiRita VJ, et al.Proc Natl Acad Sci U S A. 1991 Jun 15;88(12):5403-7. doi: 10.1073/pnas.88.12.5403.Proc Natl Acad Sci U S A. 1991.PMID: 2052618Free PMC article.
Matson JS, DiRita VJ.Matson JS, et al. Among authors: dirita vj.Proc Natl Acad Sci U S A. 2005 Nov 8;102(45):16403-8. doi: 10.1073/pnas.0505818102. Epub 2005 Oct 27.Proc Natl Acad Sci U S A. 2005.PMID: 16254052Free PMC article.