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.
Haoudi A, Semmes OJ.Haoudi A, et al. Among authors: semmes oj.Virology. 2003 Jan 20;305(2):229-39. doi: 10.1006/viro.2002.1642.Virology. 2003.PMID: 12573569Free article.