DR GOPAL MURTI / SCIENCE PHOTO LIBRARY DR GOPAL MURTI / SCIENCE PHOTO LIBRARY
Cytokinesis cell division. Coloured transmission electron micrograph (TEM) of a section through two daughter cells during cytokinesis (cytoplasmic division). The cytoplasm (pink) of the two cells (bottom & lower right) are only joined by a cytoplasmic bridge (orange) containing spindle fibres. Cell membranes are blue and the red dots are protein-forming ribosomes. The spindle fibres, formed from protein microtubules of the cytoskeleton, separate the chromosomes during mitosis. In this form of cell division two genetically identical daughter cells are produced. Cytokinesis occurs at the end of mitosis. Magnification: x20,500 at 6x7cm size.
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