spindle fiber


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mi·tot·ic spin·dle

the fusiform figure characteristic of a dividing cell; it consists of microtubules (s. fibers), some of which become attached to each chromosome at its centromere and are involved in chromosomal movement; other microtubules (continuous fibers) pass from pole to pole.
Synonym(s): nuclear spindle

spindle fiber

n.
One of a network of achromatic filaments that extend inward from the poles of a dividing cell, forming a spindle-shaped figure.
References in periodicals archive ?
Daughter cells may be deformed because I think the spindle fibers help the cell keep its shape.
Consequently, non-disjunction of chromosome and chromosome abnormality were caused by spindle fiber damage during the matured oocyte cryopreservation.
In subsequent studies, Inoue and collaborators established the reversible assembly and disassembly of spindle fibers and fibrils in living cells when exposed to cold temperatures (Inoue, 1964), antimitotic drugs (Inoue.
For example, the OI-DIC picture displays the chromosomes, while the LC-PolScope image shows the spindle fibers (Shribak et al.
gamma]-tubulin is clearly associated with the shorted spindle fibers in the polar regions (Fig.
Asters disappear as a tetrapolar spindle is assembled; microtubules emanating from the four poles are organized into spindle fibers at the surface of the tetrahedral nucleus (Fig.
If all kinetochores are not attached to spindle fibers, then what would be observed in the cell?
Separase would be active before all kinetochores were attached to spindle fibers.
As a result, with each additional bounce, the tension and stretch of the muscle increases, stimulating the muscle spindle fibers to contract.
We now demonstrate, at these General Scientific Meetings, through-focal and three-dimensionally reconstructed stereoscopic images of a free-swimming, pluteus-stage sea urchin embryo and the mitotic spindle fibers within the two-cell stage of a dividing ctenophore egg.
The spindle of the dividing ctenophore egg, reconstructed from serial optical sections in polarization microscopy, shows the 3-D organization of the birefringent chromosomal spindle fibers (kinetochore microtubule bundles) in rocking stereoscopic projection.