Objective : To discuss the change rules of thrombus biomarkers in MCAO model rats after ischemia by ob-serving the dynamic changes of plasma TAT, F1 + 2, D - dimer, vWF content in the middle cerebral artery occlusion (MCAO) model rats, and to confirm the optimal observation time for pharmaceutical research. Methods:All 56 male SD rats were randomly divided into sham - operated group and different ischemia groups( post - ischemia 1 h ,12 h,6 h,24 h, 48 h,72 h group) ,8 rats in each group . Rat model of middle cerebral artery occlusion was...