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.
Boekelheide V, Fedoruk NA.Boekelheide V, et al. Among authors: fedoruk na.Proc Natl Acad Sci U S A. 1966 Jun;55(6):1385-7. doi: 10.1073/pnas.55.6.1385.Proc Natl Acad Sci U S A. 1966.PMID: 16578633Free PMC article.No abstract available.