At 1,2,4 and 8 weeks after surgery,vein graft were harvested for the ratio of intimal area/media area(I/M)and expression of ICAM-1 and Cyclin A.

• 观测新生内膜与中膜面积比 (I M)、细胞间黏附分子 (ICAM 1)及细胞周期素A(CyclinA)的表达。