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. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / US DEPARTMENT OF AGRICULTURE / Michael Heaton |
Bildgröße: | 3711 px × 2500 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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