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United States Department of Agriculture

Agricultural Research Service

Download a high-resolution (300dpi) digital image here.


  Image Number D625-1

A sponge rubbed on a cow’s hide to sample contaminants, including soil, manure, and microorganisms.


Photo by Peggy Greb.

640 pixels wide: (d625-1.jpg)

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Last Modified: 8/13/2016
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