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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number K8229-1

Sheep in this flock being observed by ARS veterinary medical officer Don Knowles are in the early stages of scrapie infection. A new monoclonal antibody test can detect telltale prions in lymphoid tissue taken from a sheep’s third eyelid.

Photo by Jack Dykinga.

640 pixels wide: (k8229-1.jpg)

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Last Modified: 7/18/2012
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