Scrapie test preparations. Microbiologist preparing a sample of sheep eyelid tissue for a scrapie test. Scrapie,caused by a prion,is a fatal,degenerative disease that affects the nervous systems of sheep and goats. This research is being carried out by the Agricultural Research Service of the US Department of Agriculture. Photographed in the USA | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Dykinga, Jack / US Department of Agriculture |
Bildgröße: | 2403 px × 3656 px |
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