PEGGY GREB / US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY PEGGY GREB / US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY
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Scrapie disease resistance testing. Molecular biologist extracting DNA (deoxyribonucleic acid) for genetic testing to see which goats might have increased resistance to scrapie. Scrapie is a disease that affects sheep and goats. It is a transmissible spongiform encephalopathy (TSE) that is caused by a virus-like prion which damages nerve function. Other examples of TSEs are bovine spongiform encephalopathy (BSE, or 'mad cow disease') in cows, and Creutzfeldt-Jakob disease (CJD) in humans.
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