concept

HeLa cell in prometaphase. The chromatin is stained red and the microtubules forming the spindle stained green. The chromatin has condensed but there is not yet complete attachment of the chromosomes to the spindle.

Avian blood

Liver

Human cell in interphase showing the tubulin component of the cytoskeleton in green and the DNA in red. The centrosome, to which the microtubules attach, can be seen to the right of the nucleus.

TEM gut cell undergoing secondary necrosis

White blood cell - polymorphonuclear leucocyte

Human cell in anaphase

Cell showing tubulin and mitochondria

Meiosis

Misreplication of DNA in human fibroblast nucleus

Human chromosomes in early anaphase. At this stage the chromosomes have started to separate from each other and move towardds opposite poles of the cell.

Chromosomes at metaphase

Human cell showing nucleus and tubulin

Nucleus in prometaphase. The chromosomes are stained green. The chromatin has condensed but there is not yet complete attachment of the chromosomes to the spindle (not visible in the image).

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Nucleus

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Human chromosomes in early anaphase. At this stage the chromosomes have started to separate from each other and move towardds opposite poles of the cell.

Human cell in anaphase

Chromosomes at metaphase

Human cell showing nucleus and tubulin

Nucleus in prometaphase. The chromosomes are stained green. The chromatin has condensed but there is not yet complete attachment of the chromosomes to the spindle (not visible in the image).