= Spindle apparatus
The <spindle apparatus> distributes <chromosomes> during division of a <cell nucleus>.
Its <microtubules> and associated <molecular motors> organize <kinetochore-microtubule attachment>, positioning and <chromosome segregation>. Some <microtubules> connect to <kinetochores>, while others interact with opposite-pole arrays or the <cell cortex>. Distinct force-generating interactions therefore contribute to one coordinated division machinery. <Molecular Biology of the Cell, 4th edition by Bruce Alberts and others>[Chapter 18, Mitosis: the mitotic spindle]{ref}
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