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在电镜下观察小白鼠三叉神经尾侧脊束桉。小白鼠三叉神经尾侧脊束核分为带状亚核、胶状质亚陔与大细胞亚核。胶状质亚核神经元的超微结构最突出的特点是细胞小,呈椭圆形,核大围以一薄层细胞质,粗面内质网少而散在。某些神经元核仁近旁有核仁帽。大细胞亚核神经元的超微结构与胶状质亚核的神经元相比,其特点为:细胞中等大小,主要为多边形,细胞核较大,胞质中等量,核膜凹陷或褶入明显,褶入处附近的胞质内聚集较多的核糖体、线粒体及高尔基氏器;某些神经元核仁附近有形态不规则的核仁帽;胞质内散在有较多的粗面内质网(尼氏小体)、大量的游离核糖体及线粒体。胶状质亚核与大细胞亚核内某些神经元核膜的凹陷和褶入,可能表明神经细胞处于不同活动时期的动态过程,它也许提示与细胞质内蛋白质合成有关。
Electron microscopy mouse tail trigeminal nerve spine eucalyptus. Mice trigeminal nerve caudal spinal bundle nucleus is divided into sub-nuclear ribbon, jelly miliary subunits and large cells. The most prominent feature of the ultrastructure of subtelocellular neurons is that the cells are small and oval in shape, with a thin layer of cytoplasm and a few rough endoplasmic reticulum. Some neurons near the nucleolus nucleolar cap. Compared with the neurons of the subchondral jellyfish, the ultrastructure of the large cell subnuclear neurons is characterized by medium size, mainly polygons, large nucleus, moderate cytoplasm, obvious depression or pleating of the nuclear membrane , There are more ribosomes, mitochondria and Gallbladder in the cytoplasm near the folds, some nucleolus caps with irregular shape around the nucleolus of some neurons, and many rough endoplasm scattered in the cytoplasm Net (Nissl body), a large number of free ribosomes and mitochondria. The denuding and pleating of the nuclear membrane in some of the neurons in the subgranular and mesenchymal submucosa may indicate the dynamic process of neurons at different stages of activity and may suggest a correlation with protein synthesis in the cytoplasm.