Mitosis. Image 5 of 6. Coloured scanning electron micrograph (SEM) of the surface of a breast cancer cell during cytokinesis, the final stage of mitotic cell division. During mitosis, the nuclear material of a cell divides so that two identical nuclei are formed at opposite ends of a cell. Cytokinesis completes the process by separating the cytoplasm and cell organelles to form two daughter cells (left and right). A ring of actin protein fibres contracts around the centre of the cell, pinching it in two. Magnification: around x2200 when printed 10cm wide. For a sequence of mitosis, see images P672/088 to P672/093.
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