Methods ( 1 ) The experiments of quick decapitation and anoxia under normal pressure model in mice was used to study the effect of XNN on acute cerebral ischemia and anoxia .
方法：（1）用小鼠断头实验和常压耐缺氧实验，观察XNN对脑组织急性缺血缺氧的保护作用；
xnn