在预定取材时间点(3，6，9，12，18和24个月)将动物实施安乐死，立即取支架植入段冠脉血管（图5-2）。

图 5-2 冠脉支架植入段血管的取材：（a）猪心脏的大体标本，镊子夹持处为右冠状动脉血管（RCA）；（b）从心脏剥离后的支架植入段血管；图示取材时间点为3个月

The animals were euthanized at the scheduled sampling time points (3, 6, 9, 12, 18 and 24 months), and the coronary vessels of the stent implantation section were immediately removed (Fig. 5-2).

Fig. 5-2 blood vessels of coronary stent implantation section: (a) gross specimen of pig heart. The clamp of forceps is the right coronary artery (RCA); (b) The stent was implanted into the segment of blood vessel after stripping from the heart; The sampling time point shown in the figure is 3 months