家兔空肠淋巴管铸型的扫描电镜观察

为了探究空肠各层淋巴管的三维结构，将Ｍｅｒｃｏｘ注入家兔空肠壁内，制成淋巴管铸型后，在扫描电镜下观察。同时做半薄切片，以配合观察铸型标本。在空肠的粘膜层、粘膜下层、肌层等都存有毛细淋巴管、淋巴管。在小肠绒毛内可见到中央乳糜管，其三维结构在铸型标本上显示非常清楚；该管注入粘膜层和粘膜下层的毛细淋巴管网，从网发出淋巴管穿肌层，入浆膜层，离开空肠。还可见到淋巴管铸型呈串珠状外观；铸型表面存有双凹切迹，此处相当于瓣膜的部位。铸型表面还呈现出淋巴管内皮细胞核的压迹

SCANNING ELECTRON MICROSCOPY OF JEJUNUM LYMPHATIC CASTS IN RABBIT

asts of jejunum lymphatics in rabbit were made with Mercox and observed under scanning electro microscope. In casting lymphatics, Mercox was injected intra murally into the jejunum submucosa. Superthin section was done. This mural injection allowed a good replication of fine lymphatics including the initial lacteals in the villi. The central lacteals were observed in the intestinal villi. The villi of jejunum contained two to five lacteals. The central lacteals drained into the mucosal lymphatic capillary plexus. The lymphatic capillary from the plexus drained into the submucosal and the muscular layers lymphatics. Then drained into the lymph vessels of the serosal layer. The cast of the lymphatics shows the notch corresponding to the bicuspid valve. Numerous oval or fusiform impressions of the endothelial nuclei are observed on the surface of the lymphatic corrosion cast.