J. DE MEY, ISM / SCIENCE PHOTO LIBRARY J. DE MEY, ISM / SCIENCE PHOTO LIBRARY
Cell division. Image 1 of 4. Fluorescent light micrograph of a human (HeLa) cell dividing by mitosis, the asexual replication of a cell into two new cells. This is early anaphase, the mitosis stage where the cell's genetic material begins to separate. The genetic material is contained in chromatids, of which only the central centromeres (blue dots) are seen here. The centromeres attach to microtubules (red) that form spindles to draw the centromeres apart. Dynein (green) is a protein aiding this process. The image has been enhanced by a technique named deconvolution. Magnification: x4000 at 6x6cm size. For a sequence showing stages of mitosis, see images P672/078 to P672/081.
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