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Letter

Nature Cell Biology 5, 928–935 (1 October 2003) | doi:10.1038/ncb1046

S-phase checkpoint controls mitosis via an APC-independent Cdc20p function

Duncan J. Clarke , Marisa Segal , Catherine A. Andrews , Stanislav G. Rudyak , Sanne Jensen , Karen Smith & Steven I. Reed

Cells divide with remarkable fidelity, allowing complex organisms to develop and possess longevity. Checkpoint controls contribute by ensuring that genome duplication and segregation occur without error so that genomic instability, associated with developmental abnormalities and a hallmark of most human cancers, is avoided.