Introductory slides for Session 6 Images removed due to copyright considerations. See the following:Figure 1 and Table 1 in Reed SI. 2003. Ratchets and clocks: The cell cycle, ubiquitylation and protein turnover. Nat. Rev. Mol. Cell Biol. 4: 855-864.Figure 1 in Bartek J, Lukas J. Mammalian G1- and S-phase checkpoints in response to DNA damage. Curr Opin Cell Biol. 2001 Dec;13(6):738-47.Images removed due to copyright considerations. See the following:Figure 1 and Table 1 in Reed SI. 2003. Ratchets and clocks: The cell cycle, ubiquitylation and protein turnover. Nat. Rev. Mol. Cell Biol. 4: 855-864.Figure 1 in Bartek J, Lukas J. Mammalian G1- and S-phase checkpoints in response to DNA damage. Curr Opin Cell Biol. 2001 Dec;13(6):738-47.Image removed for copyright considerations.Source: Fig.3 in Cory S, Huang DC, Adams JM. Oncogene. The Bcl-2 family: roles in cell survival andoncogenesis. 2003 Nov 24;22(53):8590-607. Figure by MIT OCW. After Yang and Xu, "Regulation of apoptosis: the ubiquitous way." FASEB J 17 (2003) 790-799. Courtesy of Dr. Jeremy Hughes. Used with permission.Source: "Apoptosis,"