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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Each of these blastomeres had a microtubule-organizing center (data not shown) similar to the one present in the blastodisc from [T.sub.n] = 0.30 to at least [T.sub.n] = 0.76.
That we could regenerate microtubules and oil droplet movement near the animal pole by irradiating this region en face is not surprising, given the apparent presence of a microtubule-organizing center there (Abraham et al., 1993b).

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