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.
Dreesen O, Cross GA.Dreesen O, et al. Among authors: cross ga.Exp Parasitol. 2008 Jan;118(1):103-10. doi: 10.1016/j.exppara.2007.07.016. Epub 2007 Aug 29.Exp Parasitol. 2008.PMID: 17910953Free PMC article.