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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number K8353-1

To determine the motor function of middle-aged test rats, behavioral psychologist Barbara Shukitt-Hale and technician George Mouzakis monitor the performance of these 15-month-olds walking a rotating rod.

Photo by Keith Weller.



640 pixels wide: (k8353-1.jpg)




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Last Modified: 5/23/2006
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