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United States Department of Agriculture

Agricultural Research Service

Image Number D1585-4

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Image Number D1585-4

Technicians Gerald Hammel (left) and Alane Robinson prepare geranium leaves for grinding, extracting, and filtering, while entomologist Christopher Ranger (background) separates and purifies the active phytochemicals.


Photo by Stephen Ausmus.

640 pixels wide: (d1585-4.jpg)

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Last Modified: 2/25/2010
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