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.
Shtivelman E, Henglein B, Groitl P, Lipp M, Bishop JM.Shtivelman E, et al. Among authors: bishop jm.Proc Natl Acad Sci U S A. 1989 May;86(9):3257-60. doi: 10.1073/pnas.86.9.3257.Proc Natl Acad Sci U S A. 1989.PMID: 2470097Free PMC article.
Shtivelman E, Cohen FE, Bishop JM.Shtivelman E, et al. Among authors: bishop jm.Proc Natl Acad Sci U S A. 1992 Jun 15;89(12):5472-6. doi: 10.1073/pnas.89.12.5472.Proc Natl Acad Sci U S A. 1992.PMID: 1608957Free PMC article.