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.
Res P, Martínez-Cáceres E, Cristina Jaleco A, Staal F, Noteboom E, Weijer K, Spits H.Res P, et al. Among authors: spits h.Blood. 1996 Jun 15;87(12):5196-206.Blood. 1996.PMID: 8652833Free article.