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United States Department of Agriculture

Agricultural Research Service


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Image Number K8987-1

Microbiologist Amy Charkowski and graduate student Abdulah Harris observe the display of a confocal microscope being used to examine an alfalfa sprout root that has been experimentally contaminated with Salmonella. The microbes show up green or blue on the computer screen.

Photo by Scott Bauer.



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Last Modified: 10/28/2016
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