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United States Department of Agriculture

Agricultural Research Service

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Image Number D2860-1

At ARS’s U.S. Meat Animal Research Center, ewes are bred to produce lambs with a gene that influences ovine progressive pneumonia virus (OPPV) infection. These lambs are naturally exposed to OPPV and monitored for infection throughout their lives.


Photo by Michael Heaton.

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Last Modified: 8/13/2016
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