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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number D292-15

Ear notch samples are becoming a popular and effective method of screening cattle. With minimum stress to the animal, microbiologist Julia Ridpath and animal caretaker Bruce Gray collect a sample to test for virus presence.

Photo by Stephen Ausmus.

640 pixels wide: (d292-15.jpg)

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Last Modified: 5/23/2006
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