Mitosis in the neural tube
Mitosis in the neural tube
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DOI：
10.1002/cne.900620207
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发表时间：
1935-10-01
影响因子：
2.5
通讯作者：
Sauer, FC
中科院分区：
文献类型：
--
作者：
Sauer, FC
鸡胚和猪胚神经管的成海绵细胞和生殖细胞是柱状上皮的组成部分。海绵母细胞，高柱状成分，是相互作用的阶段，而靠近管腔的圆形生发细胞是同一细胞的有丝分裂阶段。对有丝分裂各阶段的分析表明，细胞核在分裂前向管腔迁移，在此过程中呈尖形。分裂后，子细胞核从管腔迁移到神经管壁的深处。上皮细胞在靠近管腔的表面通过终杆相互附着。每个柱状细胞的内端包含一个二倍体和一个结构，即末端网，它似乎是一个在末端棒之间通过的纤维网络。除了细胞本身的细胞质膜外，没有内界膜。
The spongioblasts and germinal cells of the neural tube of the chick and pig embryo are elements of a columnar epithelium. The spongioblasts, the tall columnar elements, are interkinetic stages, and the rounded germinal cells near the lumen are mitotic stages of the same cell. An analysis of the stages of mitosis shows that nuclei migrate toward the lumen preceding a division, assuming a sharply pointed form in the process. After division the daughter nuclei migrate from the lumen into the depths of the neural tube wall. The cells of the epithelium are attached to each other at the surface next the lumen by terminal bars. The internal end of each columnar cell contains a diplosome and a structure, the terminal web, which appears to be a network of fibrils passing between the terminal bars. There is no internal limiting membrane other than the cytoplasmic membrane of the cells themselves.