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.
Johnson DE, Dutcher SK.Johnson DE, et al. Among authors: dutcher sk.J Cell Biol. 1991 Apr;113(2):339-46. doi: 10.1083/jcb.113.2.339.J Cell Biol. 1991.PMID: 1672692Free PMC article.