Dean O. Cliver

In December 2003, the United States became the 24th country to diagnose a case of bovine spongiform encephalopathy (BSE), also known as “mad cow disease.” U.S. regulations had required embargoes against all things bovine from the previous 23 countries, and now it is our turn.

Since the suspect 6.5-year-old dairy cow slaughtered in Washington State was a “downer” (not ambulatory), a brain sample was sent to the U.S. Dept. of Agriculture’s reference laboratory in Ames, Iowa, for testing for BSE. Th…

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