A portion of the brain stem is removed from cattle that exhibit nervous system signs and from older cattle that are harvested or die unexpectedly. The section is examined for the presence of the tissue changes characteristic of the disease.
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Last Updated: February 19, 2008
A portion of the brain stem is removed from cattle that exhibit nervous system signs and from older cattle that are harvested or die unexpectedly. The section is examined for the presence of the tissue changes characteristic of the disease.
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