Back to Unit Page Unit Textbook Chapter Animations & Images Expert Interview Transcripts Unit Glossary Related Resources View List with Icons Animations How a Proto-oncogene Becomes an Oncogene p53's Role in the Cell Telomeres The Cell Cycle: Cyclins and Checkpoints The Signal Transduction Pathway Images Telomeres Harold Bishop and Harold Varmus Ras protein Breast cancer cells Signal transduction pathway The cell cycle Some genes associated with cancer Some drugs used in the treatment of cancer

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