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A Holstein cow stands in the sun on Nov. 30, 2004. This U.S. cow and others like her are safe from mad cow disease (bovine spongiform encephalopathy) thanks in large part to U.S. Department of Agriculture’s (ARS) Agriculture Research Service, (ARS) research on the disease and other transmissible spongiform encephalopathies. Photo by Peggy Greb.

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Uploaded on January 31, 2013
Taken on November 30, 2004