STEPHEN AUSMUS / US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY STEPHEN AUSMUS / US DEPARTMENT OF AGRICULTURE / SCIENCE PHOTO LIBRARY
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Bovine prion disease genetics research. Microbiologist (left), research leader (centre), and molecular biologist, viewing DNA sequence variation within the cattle prion gene. Prions cause fatal, degenerative diseases that affect the nervous system. In cattle, the diseases are known as bovine spongiform encephalopathy (BSE). This research is being carried out by the Agricultural Research Service (ARS) of the US Department of Agriculture. Photographed in the USA.
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