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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number K7778-1

The dark, wavy, vertical line in the center of this micrograph is an infection tube of the fungus, Puccinia recondita, growing toward a leaf opening, or stoma.

Photo by Gilbert Ahlstrand.

640 pixels wide: (k7778-1.jpg)

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Last Modified: 5/23/2006
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