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Reference in the National Toxicology Program website to any specific commercial products, process, service, manufacturer, or company does not constitute its endorsement or recommendation by the U.S. Government, the National Toxicology Program, or the National Institute of Environmental Health Sciences. The National Toxicology Program is not responsible for the contents of any "off-site" web page referenced from the server.
Copyright Information
Links to the National Toxicology Program websites are welcomed. Unless a copyright is indicated, information on the National Toxicology Program website is in the public domain and may be copied and distributed without permission. Citation of the National Toxicology Program as the source of the information is appreciated. If a copyright is indicated on a photo, graphic or other material, permission must be obtained from the original source.
Web page last updated on January 27, 2006