Scientists Announce Mad Cow Breakthrough
Genetic Engineering Creates Cattle without Protein That Causes Disease
By Rick Weiss
Washington Post
Scientists said yesterday that they have used genetic engineering techniques to produce the first cattle that may be biologically incapable of getting mad cow disease.
The animals, which lack a gene that is crucial to the disease’s progression, were not designed for use as food. They were created so that human pharmaceuticals can be made in their blood without the danger that those products might get contaminated with the infectious agent that causes mad cow.
