Laboratory study:Animal experiment: Twelve healthy dogs were randomized into EXCEL group (implanted EXCEL stents, n=6) or BMS group (implanted BMS stents, n=6).

• 动物实验:采用随机数字法将健康家犬12只随机分入EXCEL组(冠脉内植入EXCEL支架,n=6)和BMS组(冠脉内植入S-支架,n=6)。