Section 12   Etiology and Oncogenesis of Tumors Preloader

Section 12 Etiology and Oncogenesis of Tumors - PowerPoint PPT Presentation


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Acquired (environmental) DNA damaging agents:ChemicalsRadiationviruses. . Normal cell. . . DNA Damage. . Mutations in the genome of somatic cells. . . . Activation of growth- promoting oncogenes. Alterations of genes that regulate apoptosis. Inactivation of cancer suppressor genes. . . . Expressi

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