Checkered history of mother and daughter cells explains cell cycle differences

In preparing to divide, mother and daughter cells use different gears and levers to regulate their genes. A collaboration between two geneticists and their labs now reveals that this difference in gene expression ultimately affects the protein CLN3, the levels of which certify whether a cell is ready to commit to another grueling round of cell division. The work sets a new compass point for studying how cell division may go awry in different types of cancer.

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