由于临床脑梗塞病人的各种样本,尤其是脑组织难于取材,且临床病人难于控制实验条件及不宜施加某些干扰因素,因此人们常利用各种实验动物,来研究缺血性脑血管病。大多数实验动物由于颅内有侧支循环的代偿作用很难造成脑缺血。近几年国外有文献报道长爪沙鼠Mongolian gerbil(Meriones unguiculatus)具有独特的解剖学特征,即没有联系颈内动脉系统和椎基底动脉 Because of various samples of patients with clinical cerebral infarction, especially difficult to draw brain tissue, and clinical patients difficult to control the experimental conditions and should not impose certain interference factors, so often people often use a variety of laboratory animals to study ischemic cerebrovascular disease. Most experimental animals due to intracranial collateral circulation compensatory effect is very difficult to cause cerebral ischemia. In recent years, foreign literature has reported Mongolian gerbil Mongolian gerbil (Meriones unguiculatus) has a unique anatomical characteristics, that is, no link between the internal carotid artery system and vertebrobasilar artery