The Mad Cow Disease (Bovine Spongiform Encephalopathy) is a chronic consumption lethal disease infected by the Prion.

• 疯牛病 (牛海绵状脑病 )是由朊病毒即传染性蛋白颗粒 ( Prion)引起的一种慢性消耗性致死性的传染病。