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United States Department of Agriculture

Agricultural Research Service

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Image Number D479-1

Microbiologist Jerry Sims holds a culture of giant ragweed (Ambrosia trifida) seeds embedded in agar, some overgrown with soil microorganisms. Sims is investigating how and why some weed seeds escape decay by these organisms.

Photo by Peggy Greb.

640 pixels wide: (d479-1.jpg)

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Last Modified: 8/13/2016
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