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United States Department of Agriculture

Agricultural Research Service

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Image Number D1423-16

Fish physiologist Gibson Gaylord (foreground) collects blood from rainbow trout to measure plasma amino acid levels in fish fed diets containing an alternative ingredient, such as barley protein concentrate. Technician Jason Frost nets trout for the analysis.


Photo by Stephen Ausmus.

640 pixels wide: (d1423-16.jpg)

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Last Modified: 8/13/2016
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