Gleevec bound to the Abl kinase domain. (PDB ID: 1IEP. Nagar, B., W. Bornmann, P. Pellicena, T. Schindler, D. R. Veach, W. T. Miller, B. Clarkson, J. Kuriyan. "Crystal Structures of the Kinase Domain of c-Abl in Complex with the Small Molecule Inhibitors PD173955 and Imatinib." Cancer Research. 62 (2002): 4236-4243. Image by Elizabeth Vogel Taylor.)

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