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![Download a high-resolution (300dpi) digital image here](https://webarchive.library.unt.edu/eot2008/20080921170343im_/http://www.ars.usda.gov/is/graphics/photos/downloadbutton.gif)
Image Number D482-3
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ARS chemist Robert Owens (right), microbiologist Susan Thompson, and technician John Clark review results of a "dot blot" assay for potato spindle tuber viroid. These assays provide sensitive, rapid detection of infected plants and identify any viroids present.
Photo by Stephen Ausmus.
640 pixels wide: (d482-3.jpg)
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Last Modified: 05/23/2006
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