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United States Department of Agriculture

Agricultural Research Service

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Image Number K8688-2

This lower leaf of Etrog citron, an indicator host, shows typical symptoms of viroid infection-necrotic cells on the midvein and petiole, where the leaf attaches to the stem.

Photo by Peggy Greb.

640 pixels wide: (k8688-2.jpg)

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Last Modified: 8/13/2016
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