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Figure 1 Myocyte proliferation in humans. A small dividing myocyte (alpha-sarcomeric actin, red) with metaphase chromosomes (arrow) is present in the left ventricular myocardium of a patient affected by chronic ischemic cardiomyopathy. Nuclei and metaphase chromosomes are labeled by propidium iodide (blue). Laminin defines the boundary of the cells (green).
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