ERK's got rhythm: Protein that controls cell growth found to cycle in and out of cell nucleus

Time-lapsed video of individual breast tissue cells reveals a never-before-seen event in the life of a cell: a protein that cycles between two major compartments: the nucleus, where genes are turned on and off, and the cell proper, where proteins work together to keep the cell functioning. The results give researchers a more complete view of the internal signals that cause breast tissue cells to grow, events that go awry in cancer.

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