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.
Barker RN, Vickers MA, Ward FJ.Barker RN, et al. Among authors: ward fj.Immunol Lett. 2007 Jan 15;108(1):20-6. doi: 10.1016/j.imlet.2006.10.005. Epub 2006 Nov 13.Immunol Lett. 2007.PMID: 17134764Review.