Cancer is uncontrolled cell growth that occurs when the cell cycle malfunctions. Cancer cells can spread through the body destroying other cells that get in their way.

Many genes control the cell cycle. If any of these genes mutate the cell may lose control of the cell cycle and a cancer will often be the result.

P53 is a tumor suppressor gene that regulates the cell cycle. If the DNA of a cell is damaged it will cause the cell to go into apoptosis.

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