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.
Honegger AM, Kris RM, Ullrich A, Schlessinger J.Honegger AM, et al. Among authors: ullrich a.Proc Natl Acad Sci U S A. 1989 Feb;86(3):925-9. doi: 10.1073/pnas.86.3.925.Proc Natl Acad Sci U S A. 1989.PMID: 2915986Free PMC article.
Hsu CY, Mohammadi M, Nathan M, Honegger A, Ullrich A, Schlessinger J, Hurwitz DR.Hsu CY, et al. Among authors: ullrich a.Cell Growth Differ. 1990 Apr;1(4):191-200.Cell Growth Differ. 1990.PMID: 2083199