[名词解释] ischemic penumbra

Claude syndrome 上矢状窦血栓形成 syndrome 0f superior cerebellar artery 霍乱属于下列哪类传染病() ["A．甲类","B．乙类","C．丙类","D．丁类","E．戊类"] steal syndrome of subclavian artery ischemic penumbra