Question

76. Mad cow disease is caused by:
a)Virus b) Bacteria c) Prions d) Fungus
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Answer 1

Answer:

Experts are not sure what causes mad cow disease or vCJD. The leading theory is that the disease is caused by infectious proteins called prions (say "PREE-ons"). In affected cows, these proteins are found in the brain, spinal cord, and small intestine.

Answer 2

Explanation:

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Mad cow disease is caused by:

b) Bacteria