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United States Department of Agriculture

Agricultural Research Service

Image Number D2163-2

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Image Number D2163-2

Microbiologists Maria Brandl and Craig Parker study microarray data to identify E. coli O157:H7 genes activated after the bacteria encounter liquid leaking from cut lettuce.


Photo by Peggy Greb.

640 pixels wide: (d2163-2.jpg)

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Last Modified: 3/29/2011