The plane of cell division is, in turn, determined by the orientation of the mitotic spindle. 细胞分裂的方向又是由有丝分裂的纺锤体所确定。
During cell division microtubules of the spindle assembled from tubutin subunits near organelles called centrioles move the chromosomes. 在细胞分裂期间，中心粒周围的由微管蛋白亚基装配形成的纺锤体微管移向染色体。
