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A higher magnification view of another section of the micronuclei in
Figure 6. The circumferential band cut in cross section in the upper
nucleus does look like it is composed of a band of four microtubules
(arrows). This band is cut tangentially in the nucleus to the
left and may appear as three disbursed segments in the lower nucleus
(arrowheads). Whether these microtubules are remnants of
previous mitotic events or are a constant feature of micronuclei is
not known. EM taken on 3/18/81 by R. Allen with Hitachi HU11A TEM.
Neg. 18,000X. Bar = 0.25µm.
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