在透射电镜下观察到有细胞核膜消失，染色质变成粗颗粒状．中心粒一分为二，两中心粒之间还有纺锤丝牵引；
Under electron microscope, it was found that in some cells the nuclear membrane disappeared partly, chromatin became broadly granular and two centrioles were jointed by spindle fibers.
在纺锤体迁移的过程中，一个无微绒毛但富含微丝的区域形成于其上方皮质区域。至此，卵母细胞的极性形成。
During spindle migration, an area enriched in actin microfilaments and devoid of microvilli begins to form in the cortex overlying the spindle, and prominent cortical polarity develops.
微丝是控制纺锤体旋转的关键因素；
Microfilaments play a crucial role in regulating spindle rotation.
微丝是控制纺锤体旋转的关键因素；
Microfilaments play a crucial role in regulating spindle rotation.
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