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United States Department of Agriculture

Agricultural Research Service

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Image Number D1740-1

A hop flower is embedded in an agar plate that was inoculated with an HAB strain (Clostridium sticklandii). The opacity of the plate is caused by bacterial growth, and the dark halo around the flower is where the bacteria were inhibited by antimicrobial compounds in the plant.


Photo by Randy Dinkins.

640 pixels wide: (d1740-1.jpg)

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Last Modified: 6/27/2017
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