microtubule-organizing center

mi·cro·tu·bu·le-·organ·iz·ing cen·ter

a locus in interphase and mitotic cells from which most microtubules radiate; in the center of this center is the centriole; this center determines the polarity of cellular microtubules.
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Objective: Centrosomes are the main microtubule-organizing centers in animal cells and their structure and function are extremely well conserved across evolution.

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