Local heart surgeons are reporting early success with a replacement aortic valve made of bovine, or cow, tissue. The valve can last 20 years and doesn't require lifelong anticoagulants, a requirement ...
Cow parts -- including hooves, bones, fat and innards -- are used in everything from hand cream and antifreeze to poultry feed and gardening soils. In the next tangled phase of the mad cow ...
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