Discovery of mad cow disease in California was stroke of luck

Wednesday, April 25, 2012 | 9:34 a.m. CDT; updated 9:57 a.m. CDT, Wednesday, April 25, 2012

HANFORD, Calif. — A nondescript building in the heart of California's dairy country has become the focus of intense scrutiny now that mad cow disease has been discovered in a dead dairy cow.

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