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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number D625-1

After the cow's hide was sampled, the sponge has been coated with a representative sample of the contaminants present on the animal’s hide, including hair, soil, feces, and microorganisms.

Photo by Peggy Greb.

640 pixels wide: (d625-1.jpg)

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Last Modified: 10/4/2006