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ARS Home Office of Communications Images Photos Nov98





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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)   Please visit our Image Gallery


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