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United States Department of Agriculture

Agricultural Research Service

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Image Number K11798-1

Chemist Noreen Mahoney performs analysis of aflatoxin from a petri dish (center) containing Tulare walnuts inoculated with Aspergillus flavus. The dish in the foreground (green) contains no walnut tissue and displays extensive growth of A. flavus.

Photo by Peggy Greb.

640 pixels wide: (k11798-1.jpg)

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Last Modified: 8/13/2016
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