Objective:To investigate the relationship between the chemotactic factor CCL21 and its receptor CCR7 and coronary vulnerable plaque.Method:A total of 180 patients underwent coronary angiography(CAG)was included into three groups:acute coronary syndrome(ACS) group(n = 60),stable angina pectoris(SAP)group(n=60) and control group(patients with normal coronary angiography and without other evidence of atherosclerosis,n=60).ACS group and SAP group underwent intravascular ultrasound(IVUS) examination after CAG.Do...