Figure 1.

Human chromosomes. Meters of DNA are packed into micrometer-sized chromosomes in mitosis, here in human (HeLa) cells arrested in mitosis. Chromosomes were spread and stained with a DNA binding dye. Scale bar, 10 μm (photograph courtesy of Sriramkumar Sundaramoorthy and Mark Petronczki).

Uhlmann BMC Biology 2013 11:9   doi:10.1186/1741-7007-11-9
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