LIVING IN FLIGHT: JORDAN X LEVI'S Artist Julian Gaines on the evolving denim canvas. WAVEY DADA Wavey Dada skates his J's in New York City. SEASON OF HER 10 unique colorways for her to kick off the season.
Mad cow disease, or bovine spongiform encephalopathy (BSE), is a transmissible, slowly progressive, degenerative, and fatal disease affecting the central nervous system of adult cattle. The U.S. Department of Agriculture (USDA) has tested hundreds of thousands of cattle for BSE.
1 It's neither. 2  Mad cow disease is in a new class of infectious agents called prions. 3  The disease is caused when a normal prion protein folds into an abnormal shape and no longer breaks down inside the body.