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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Gastrointest Endosc Clin N Am. 2011 Jan;21(1):25–38. doi: 10.1016/j.giec.2010.09.011

Figure 2. Cell Cycle.

Figure 2

There are 4 phases of the cell cycle, gap 1 (G1), DNA synthesis (S), gap2 (G2), and mitosis. The Rb regulatory point controls passage from G1 into S phase.