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United States Department of Agriculture

Agricultural Research Service

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Image Number K9857-1

Examining an electrophoresis gel, zoologist Benjamin Rosenthal identifies fragments of genes isolated from related species of parasites. Genes common to all such species provide a good basis for comparing and diagnosing them.

Photo by Peggy Greb.

640 pixels wide: (k9857-1.jpg)

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Last Modified: 8/13/2016
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