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.
Sieff CA, Niemeyer CM, Mentzer SJ, Faller DV.Sieff CA, et al. Among authors: mentzer sj.Blood. 1988 Oct;72(4):1316-23.Blood. 1988.PMID: 2458780Free article.