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.
Lednicky JA, Arrington AS, Stewart AR, Dai XM, Wong C, Jafar S, Murphey-Corb M, Butel JS.Lednicky JA, et al. Among authors: stewart ar.J Virol. 1998 May;72(5):3980-90. doi: 10.1128/JVI.72.5.3980-3990.1998.J Virol. 1998.PMID: 9557685Free PMC article.
Krajcsi P, Tollefson AE, Anderson CW, Stewart AR, Carlin CR, Wold WS.Krajcsi P, et al. Among authors: stewart ar.Virology. 1992 Mar;187(1):131-44. doi: 10.1016/0042-6822(92)90302-6.Virology. 1992.PMID: 1531278