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United States Department of Agriculture

Agricultural Research Service

Image Number D3117-1

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  Image Number D3117-1

Swabs are taken from inside the mouths of birds, placed in tubes, and then tested for the presence of avian influenza virus.


Photo by Erica Spackman.

640 pixels wide: (d3117-1.jpg)

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Last Modified: 3/5/2014
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