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United States Department of Agriculture

Agricultural Research Service

Image Number D3119-1

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  Image Number D3119-1

Microbiologist Erica Spackman reviews results of a reverse transcription polymerase chain reaction test to determine whether there is virus in a sample and to generate material for gene sequencing.


Photo by Suzanne Deblois.

640 pixels wide: (d3119-1.jpg)

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Last Modified: 3/5/2014
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