应用半薄切片光镜观察和超薄切片电镜观察的方法研究了豚鼠胸腺内淋巴管的微细分布和超微结构 ,观察了内皮细胞间的连接点 ,测定了内皮细胞内小光的体密度、数密度、平均直径及分布密度 ,并用多功能医学图像分析系统进行定量分析 ,结果证明胸腺间质和被膜下存有淋巴管 ,而小叶内未发现 ,在胸腺组织液和大分子物质转途中 ,中、小泡系统可能起主要作用 The microtission and ultrastructure of lymphatic vessels in the thymus of guinea pigs were studied by semi-thin sections and ultra-thin sections electron microscopy. The connection points of endothelial cells were observed, the body density of small light in endothelial cells was measured, Number density, average diameter and distribution density, and quantitative analysis with a multi-functional medical image analysis system, the results showed that there are lymphatic vessels in the thymus stroma and the capsule, and not found in the lobules, thymus tissue fluid and macromolecules transit , The vesicle system may play a major role