The amount of VEGF-positive cells and CD31 marked microvessel density count were gradually increased, reached the peak at 3 months, and stabilized at 6 months.

• 支架植入后周围组织表达血管内皮生长因子阳性细胞数量和CD31标记的微血管数逐渐增多，3个月达高峰，6个月后数量趋于稳定。