大鼠小肠淋巴管前通路内标记物的观察

THE OBSERVATION OF THE FAT LABELLED IN PRELYMPHATIC PATHWAY IN INTESTINE OF RAT

目的 研究小肠淋巴管前通路的存在情况。 方法 给大鼠喂食用SudanBlackB标记的脂肪 ,在光镜和电镜下追踪脂肪吸收途径。 结果 光镜下见到脂肪呈蓝绿色 ,分布于上皮细胞内、上皮细胞基部之间和中央乳糜管内及其附近组织间隙内。电镜下见到染料颗粒分布于上皮细胞内、组织间隙和中央乳糜管内。 结论脂肪从肠腔经上皮细胞、组织间隙进入中央乳糜管 。

Objective To study the prelymphatic pathway in intestine. Methods Sudan black B was used to label fat which was fed to rats, then the pathway by which fat got into lacteals was observed under light and electron microscope. Results Under light microscope, we saw the blue\|greenish fat in epithelia, between epithelia, in lacteals and in the interstitial space around the lacteals. Under electron microscope, the pellets existed in epithelia, interstitial space and lacteals. Conclusion Fat might get into lacteals through the epithelia and the interstitial space which might be regarded as prelymphatic pathway. [