Castenholz A
Scan Electron Microsc. 1985(Pt 3):1201-8.
The luminal surface of the subepithelial lymphatic plexus in the tongue of rats was investigated with SEM at different stages of postnatal development. In newborn and infant animals prominent and branched endothelial cells exhibit a conspicuous phenomenon producing a very irregular inner profile of the vascular wall. Among these cells the spindle-shaped type proves to be an essential component of the valve structures already found in few-day-old animals. There are also prominent cells with a polygonal appearance resembling histioblasts which form with their manifold processes, that partly extend into the lumen, an interlacing cellular pattern. The special morphological characteristics of the endothelium of the initial lymphatics already occurring in early postnatal development point to several particular functional activities such as controlled permeability, contractility, phagocytotic property, and demonstrate the exceptional position of this kind of vessel among the structures of the lymph- and blood-draining system.
利用扫描电子显微镜对大鼠出生后不同发育阶段舌上皮下淋巴丛的管腔表面进行了研究。在新生和幼年动物中，突出且分支的内皮细胞呈现出一种显著现象，使得血管壁内部轮廓非常不规则。在这些细胞中，纺锤形细胞被证明是在出生几天后的动物中就已发现的瓣膜结构的重要组成部分。还有一些外观呈多边形、类似组织母细胞的突出细胞，它们通过其众多部分延伸至管腔的突起形成一种交错的细胞模式。出生后早期就已出现的初始淋巴管内皮的特殊形态特征表明其具有多种特殊功能活动，如可控通透性、收缩性、吞噬特性，并证明了这类血管在淋巴引流和血液引流系统结构中的特殊地位。
