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.
Howe CC, Tan KB, Sokol F.Howe CC, et al. Among authors: sokol f.J Gen Virol. 1975 Apr;27(1):11-24. doi: 10.1099/0022-1317-27-1-11.J Gen Virol. 1975.PMID: 167105
Tan KB, Sokol F.Tan KB, et al. Among authors: sokol f.J Gen Virol. 1974 Oct;25(1):37-51. doi: 10.1099/0022-1317-25-1-37.J Gen Virol. 1974.PMID: 4372316No abstract available.