Deposition of black and great granular substance was observed in arterial wall of pure modeling group, but dispersed black and granular substance was observed in tunica intima of artery after slices stained in intervention group of bone-marrow mesenchymal stem cells. 单纯造模组动脉壁中可见大量黑色大颗粒物质的沉积,而骨髓间质干细胞干预组的动物切片染色后在动脉内膜部分可见散在的黑色颗粒状物质,并没有聚集成片。