The interkinetic migration of embryonic epithelial nuclei
The interkinetic migration of embryonic epithelial nuclei
复制标题
胚胎上皮细胞核的运动间迁移
DOI：
--
复制
发表时间：
1936
期刊：
影响因子：
--
通讯作者：
F. C. Sauer
中科院分区：
文献类型：
--
作者：
F. C. Sauer
脊椎动物胚胎柱状上皮细胞核在分裂前移至游离上皮表面，核的运动伴随柱状细胞的缩短。在自由表面分裂后，子代细胞拉长，核从自由表面消失。吊袜带蛇胚胎前肠细胞的绘制和测量说明了这一点。这些细胞在有丝分裂后的伸长与纺锤体纤维的伸长有关，以产生突出的细胞质纤维，该纤维在分裂间期持续到下一次有丝分裂。有丝分裂中核巢的出现是由于较早的细胞的后代在分裂过程中保持了大致同步的事实。
Nuclei of columnar epithelia of vertebrate embryos move to the free epithelial surface before a division, the movement of the nucleus accompanying a shortening of the columnar cell. After division at the free surface the daughter cells elongate, the nuclei passing away from the free surface. This is illustrated by drawings and measurements of cells of the fore‐gut it of the garter snake embryo. The elongation of these cells after mitosis is associated with an elongation of the spindle fibers to produce a prominent cytoplasmic fiber which persists through the interkinetic stage and into the next mitosis. The appearance of nests of nuclei in mitosis is accounted for by the fact that descendants of an earlier cell have kept approximately in step in their divisions.