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United States Department of Agriculture

Agricultural Research Service

Image Number D1528-1

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Image Number D1528-1

Semen donated by seven large artificial-insemination organizations was used to characterize the DNA of the historic cattle population. Several semen-containing straws are shown here.


Photo by Peggy Greb.

640 pixels wide: (d1528-1.jpg)

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Last Modified: 11/24/2009
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