Mad cow disease,or bovine spongiform encephalopathy(BSE),is a chronic,transmissible,fatal neurodegenerative disorder disease in cattle.

• 疯牛病(mad cow disease),即牛传染性海绵状脑病(bovine transmissible spongiform encephalopathy,BSE)的俗称,是一种慢性消耗性、致死性、中枢神经系统退行性疾病。