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Image Number K11654-1

At the ARS National Animal Disease Center in Ames, Iowa, animal caretaker Gary Hansen tends to two jersey steers. The steers are used as controls in a CWD cross-species transmission experiment in which cattle were inoculated intracerebrally with CWD-infected brain tissue.

Photo by Peggy Greb.

640 pixels wide: (k11654-1.jpg)

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