All About Prions, American Society for Microbiology, 1999
<http://www.microbe.org/news/prions.asp>

Prions: Puzzling Infectious Proteins, National Institute of Health
<http://science-education.nih.gov/nihHTML/ose/snapshots/multimedia/ritn/prions/prions1.html>

Mad cow diseases still baffle scientists: Cross-species maladies caused by mysterious prions, Maggie Fox, MSNBC News, Dec. 24, 2003
<http://msnbc.msn.com/id/3801706/>

What the Heck is "Mad Cow" Disease?, John C. Brown, December 2003
<http://people.ku.edu/~jbrown/madcow.html>

Study Examines How Prion Disease Adapts to New Species, National Institutes of Health, October 2001
<http://www.niaid.nih.gov/newsroom/releases/scrapie.htm>

Lab Experiments Reveal Potential Therapeutic Target for Degenerative Brain Diseases, National Institutes of Health, August 1999
<http://www.niaid.nih.gov/newsroom/releases/prion.htm>

"Mad Cows", Englishmen and the Prion Hypothesis, Dorothy B. Preslar, Director AHEAD/ILIAD programs
<http://www.fas.org/ahead/docs/bsesurvey.htm>

CJD's deadly switch revealed, BBC News, March 1999
< http://news.bbc.co.uk/1/hi/sci/tech/298855.stm> <http://www.priondata.org/>

The phenomena seen with transmissible spongiform encephalopathies and an attempt to explain what is seen, Steve Dealler, January 2002
<http://bse.airtime.co.uk/tse.htm>