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Kuru is an extremely rare disease. It is caused by an infectious protein (prion) found in contaminated human brain tissue.
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Kuru is caused by an infectious protein particle called a prion, which stands for proteinaceous infectious particle. A prion is similar to a virus, except that it lacks any nucleic acid, which prevents it from reproducing.
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Prions are infectious proteinaceous particles or, more simply, proteins that lack nucleic acid. They were discovered by Stanley Prusiner, who received the Nobel Prize in medicine in 1997 for his work on them.
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