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cover imagePtK1 cell in late anaphase soon after the onset of cytokinesis. The cell was fixed, then stained with phalloidin to label the filamentous actin (red), DAPI to label the DNA (pale blue), and anti-alpha-tubulin antibodies to label the microtubules (green). (Image: courtesy of Julie Canman and Ted Salmon.) [review, p.E47]