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United States Department of Agriculture

Agricultural Research Service

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Image Number K11639-1

A Western blot analysis done by technicians Deborah Clouser (sitting) and Semakaleng Lebepe-Mazur was crucial in tracking the first U.S. mad cow (bovine spongiform encephalopathy) case.

Photo by Peggy Greb.

640 pixels wide: (k11639-1.jpg)

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Last Modified: 8/13/2016
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