BSE diagnosis. Illuminator being used to flash a light into a cow's eye as part of a test to diagnose BSE (bovine spongiform encephalopathy). BSE is c

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BSE diagnosis. Illuminator being used to flash a light into a cow's eye as part of a test to diagnose BSE (bovine spongiform encephalopathy). BSE is caused by abnormal prions, which are virus-like proteins. The presence of the abnormal prions causes changes to cells in the cow's retina that can be detected by recording the retina's response to a flash of light. This is the first diagnostic test for BSE that can be carried out on a live animal.

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Photo credit: © JUSTIN GREENLEE/US DEPARTMENT OF AGRICULTURE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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