Early embryonic divisions in Drosophila are syncytial. Nuclei undergo mitosis synchronously for the first 14 nuclear cycles, in which 6000 nuclei will form, followed by cellularization (Foe and Albert...

Fluorescence image of tripolar mitosis in a liver cancer cell line. Normally, dividing cells form a single metaphase plate of paired chromosomes which are pulled apart by opposing microtubule spindle...

This movie illustrates the early division up to the four-cell stage of a C. elegans embryo depleted of npl-4 by RNAi expressing H2B::GFP by DIC and fluorescence microscopy. GFP-tagged histone H2B allo...

Four centrioles imaged in one electron micrograph of a thin section, cut from a Chinese hamster fibroblast grown in tissue culture. The two centrioles that appear circular are the 'mother' centrioles,...

This movie illustrates the early division up to the four-cell stage of a C. elegans embryo expressing YFP::CDC-48 by DIC and fluorescence microscopy. YFP::CDC-48, like YFP::UFD-1 and YFP::NPL-4, are c...

Daughter micronucleus in anaphase of a dividing cell of Didinium nasutum. The chromosomes are compacted into one large heterochromatic body. Remnants of the mitotic division spindle remain inside the ...

6-cell sand dollar embryo expressing three tandem GFPs fused to the ensconsin microtubule-binding domain (EMTB-3G; Faire et al., 1999). 10 µM nocodazole was added at time 00:00, at which time three o...

TIRF time-lapse imaging of myosin-GFP (left) and mCherry-tubulin (right) in an S2 cell depleted of kinesin-6 (Pav) by RNAi. Myosin-GFP localization to the equator and loss from the poles does not occu...

Transmission electron micrograph of isolated HeLa cell metaphase chromosome decondensed by removal of histones with dextran sulfate and heparin, centrifuged onto a carbon film and stained with uranyl ...

Transmission electron micrographs of whole metaphase chromosomes isolated from Chinese Hamster Ovary (CHO) cells showing the characteristic paired chromatids and centromeric constrictions.