DR TORSTEN WITTMANN / SCIENCE PHOTO LIBRARY DR TORSTEN WITTMANN / SCIENCE PHOTO LIBRARY
Dividing cells. Fluorescent light micrograph of cells during the metaphase stage of mitosis (cell division). DNA genetic material is yellow and the microtubules of each cell's cytoskeleton are pink, forming a microtubule spindle. The poles of the spindle are light blue. During metaphase, the chromosomes (which contain the DNA) form a line (the metaphase plate) on the microtubule spindle. The microtubules drag the chromosomes apart towards each pole to form two identical sets for the two genetically identical daughter cells that are the end product of mitosis. The spindle poles were highlighted by staining for the protein TPX2. Prepared by in vitro reconstitution.
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