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.
Millan JL, Driscoll CE, LeVan KM, Goldberg E.Millan JL, et al. Among authors: goldberg e.Proc Natl Acad Sci U S A. 1987 Aug;84(15):5311-5. doi: 10.1073/pnas.84.15.5311.Proc Natl Acad Sci U S A. 1987.PMID: 2440048Free PMC article.