Rats in model group had obvious great vessel histopathology and proliferated SMC, while vessel injury in old model group were more serious than that of young model group.
模型组大鼠的大血管内膜损伤明显，平滑肌细胞增生，其中老年模型组大鼠的血管损伤较青年模型程度严重。
Results: the level of MDA in the PDT group was higher than that of the controls, immunohistochemical staining showed PDT can make injury to vessel endothelial cell and destruct vessel structure.
结果：PD T组MDA含量高于对照组，免疫组化染色显示PDT可引起血管内皮细胞损伤和血管结构破坏。
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