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United States Department of Agriculture

Agricultural Research Service

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Image Number D063-30

At the Aquatic Animal Health Research Unit's Chestertown, Maryland, site, veterinary medical officer David Pasnik weighs and measures a tilapia fish while aquatic pathologist Joyce Evans injects another one with a vaccine.

Photo by Stephen Ausmus.

640 pixels wide: (d063-30.jpg)

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Last Modified: 8/13/2016
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