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United States Department of Agriculture

Agricultural Research Service

Image Number D1465-7

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Image Number D1465-7

Microbiologist Jim Wells processes feedlot surface material samples for microbial analysis while microbiologist Elaine Berry plates the processed samples for determination of E. coli levels.


Photo by Stephen Ausmus.

640 pixels wide: (d1465-7.jpg)

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Last Modified: 11/24/2009
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