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ARS Home Office of Communications Images Photos May13





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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.  640 pixels wide: (d2860-1.jpg)   Please visit our Image Gallery


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