近年来发现不同器官、甚至同一器官的不同部份的血管内皮细胞在结构、功能、抗原成份和分谢特点等方面均不相同。脐带动、静脉内皮细胞在低密度脂蛋白代谢等方面亦存在明显差异。因而,对血管内皮细胞异质性(Heterogeneity)的研究,是阐明其生理特点及病理变化规律的重要方面。同源性较好的细胞是进行异质性研究的必要条件。因而,探索获 In recent years, it has been found that the vascular endothelial cells in different organs and even in different parts of the same organ are different in structure, function, antigenic composition and metabolic characteristics. Umbilical cord, venous endothelial cells in the metabolism of low-density lipoprotein there are also significant differences. Therefore, the study of the heterogeneity of the vascular endothelial cells (Heterogeneity) is to clarify the physiological characteristics and pathological changes in an important aspect. Cells with better homology are the necessary conditions for the study of heterogeneity. Thus, explore won