Genetically modified sheep. Flock of female sheep (ewes, Ovis aries) bred to produce lambs with a gene that influences ovine progressive pneumonia vir

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Genetically modified sheep. Flock of female sheep (ewes, Ovis aries) 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 in order to assess their resistance to the disease. Photographed at the Agriculture Research Service (ARS), US Meat Animal Research Center, Nebraska, USA.

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Size: 3711px × 2500px
Photo credit: © Michael Heaton/US DEPARTMENT OF AGRICULTURE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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