Objective : To observe the expressions of matrix metalloproteinase - 2 and , 9 in cariac heart blood stasis syndrome of myocardial microenvironment mieroenvironment. Method : the The acute myocardial infarction rats of blood stasis models were established. Besides, there were with the sham operation group, model group, guilty stasis group, and then use the ELISA method to observe the expressions of matrix metalloproteinase 2,9. Result:The expressions of matrix metalloproteinase - 2 was higher in blood stasis group than that in healthy contro...