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.
Spiekstra SW, Dos Santos GG, Scheper RJ, Gibbs S.Spiekstra SW, et al. Among authors: scheper rj.Toxicol In Vitro. 2009 Mar;23(2):349-55. doi: 10.1016/j.tiv.2008.12.010. Epub 2008 Dec 24.Toxicol In Vitro. 2009.PMID: 19135141