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.
Wieland U, Kratschmann H, Kehm R, Kühn JE, Näher H, Kramer MD, Braun RW.Wieland U, et al. Among authors: kramer md.AIDS Res Hum Retroviruses. 1991 Nov;7(11):861-7. doi: 10.1089/aid.1991.7.861.AIDS Res Hum Retroviruses. 1991.PMID: 1760226
Schaible UE, Kramer MD, Eichmann K, Modolell M, Museteanu C, Simon MM.Schaible UE, et al. Among authors: kramer md.Proc Natl Acad Sci U S A. 1990 May;87(10):3768-72. doi: 10.1073/pnas.87.10.3768.Proc Natl Acad Sci U S A. 1990.PMID: 2339119Free PMC article.
Fuchs H, Wallich R, Simon MM, Kramer MD.Fuchs H, et al. Among authors: kramer md.Proc Natl Acad Sci U S A. 1994 Dec 20;91(26):12594-8. doi: 10.1073/pnas.91.26.12594.Proc Natl Acad Sci U S A. 1994.PMID: 7809084Free PMC article.