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Nature 432, 564-567 (2 December 2004) | doi:10.1038/432564a; Published online 1 December 2004

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Cell division:  The heart of the cycle

Jiri Lukas1 & Jiri Bartek1

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To reproduce, cells must copy their genetic material and distribute the replicas into two daughter cells. A self-perpetuating molecular oscillator regulates periodic transitions between these two processes.

Good things come to those who wait — a maxim that is as true for cells as it is elsewhere in life. Dividing cells must wait until their DNA is completely duplicated before they can segregate the replicas.

  1. Jiri Lukas and Jiri Bartek are at the Danish Cancer Society, Institute of Cancer Biology, Strandboulevarden 49, DK-2100 Copenhagen, Denmark.
    Email: lukas@biobase.dk

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