Time lapse movie of mouse embryonic fibroblasts in culture imaged at 30 second intervals by phase contrast microscopy. A micropipette is positioned near the cells to deliver either a growth factor or...

The dividing macronucleus may be porous to microtubules. Segments of microtubules are found both outside and inside the nuclear envelope in this figure although one cannot follow a single microtubule ...

Spindle oscillation is inhibited in nip100delta null cells arrested in S phase. nip100 is the yeast homologue of p150[glued] and encodes the large subunit of the cytoplasmic dynactin complex. In wild-...

A cross section showing only one basal body in two different dikinetids. Cross sections of overlapping microtubular ribbons arising from the dikinetids are seen in the ridges next to the basal body. P...

A high resolution tangential view through a dikinetid shows two microtubular ribbons extending toward the pellicle, one from each basal body, and how they overlap with ribbons from other basal bodies ...

Time lapse movie of mouse embryonic fibroblasts in culture imaged at 30 second intervals by phase contrast microscopy. A micropipette is positioned near the cells to deliver either a growth factor or...

An animation that takes the viewer inside a mammalian cell where one can see the nucleus and its characteristic envelope connected to the endoplasmic reticulum. The movie starts with a brief video cli...

The macronucleus contains microtubules that lie inside a seemingly intact nuclear envelope. Microtubules orient along the axis of macronuclear elongation in the form of small bundles. The section is i...

High resolution image of the dividing macronucleus shows it may be porous to microtubules. Segments of microtubules are found both outside and inside the nuclear envelope in this figure although one c...

Spindle oscillation in wild-type cells arrested in S phase. In wild-type cells, the spindle moves in both directions through the bud neck; these movements coincide with lateral sliding of a cytoplasmi...