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自Thome发现淋巴器官内有种特殊的血管-毛细血管后微静脉(PCV)以后,相继积累了淋巴结、扁桃体、小肠淋巴集结、淋巴孤结和胸腺等各种淋巴器官内毛细血管后微静脉的有关知识. 1 淋巴器官内PCV的形态结构特征 PCV是全身微循环系中的一部分,具有微血管的一般特征,但淋巴器官PCV的内皮细胞为单层立方或低柱状,这种内皮细胞被称为高内皮细胞.淋巴器官内的PCV则称为高内皮静脉(HEV). HEV的直径一般为8～40μm,因器官大小而异.用光镜对淋巴结HE常规染色切
Since Thome discovered a special kind of blood vessel-capillary retro-microvessel (PCV) in lymphoid organs, it has successively accumulated lymphatic vessels, tonsils, small intestine lymph nodes, lymph nodes, and thymuses and other intra-capillary post-capillary venules. Relevant knowledge. 1 Physiological and structural features of PCV in lymphoid organs PCV is a part of the whole-body microcirculation system and has the general characteristics of microvessels, but the endothelial cells of lymphoid organ PCV are monolayered or low-columnar. This endothelial cell is called High-endothelial cells. PCV in lymphoid organs is referred to as high-endothelial vein (HEV). The diameter of HEV is generally 8 ~ 40μm, which varies with the size of the organ.