Cancer_SciMethod

Cancer_SciMethod - ¡¢£¢¤¥ ¤ CANCER CANCER a group of diseases characterized by uncontrolled growth and spread of abnormal cells Cancer is

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Unformatted text preview: ¡¢£¢¤¥ ¤ CANCER CANCER ¡ a group of diseases characterized by uncontrolled growth and spread of abnormal cells Cancer is the 1 st or 2 nd leading cause of death in the U.S. (Globally - AIDS and Tobacco) Cancer cells differ from normal cells in many ways -- they do not respond to body signals to stop dividing, such as; loss of contact inhibition -- may be "immortal" Transformation: ' the process by which a normal cell changes into a cancerous cell Stages Of Cancer ' Initiation- induction of a normal cell to become cancerous ' Promotion- cancer cells keep dividing without control ' Metastasis- cancer cells spread to other locations in the body STAGES OF CANCER INITIATION- A cancer causing agent (carcinogen) induces normal cells to become cancerous. Permanent damage to DNA. STAGES OF CANCER PROMOTION- Cells are stimulated to undergo uncontrolled growth (division). Cells are no longer subject to the body's normal controls on cell division. Tumor Formation- Abnormally dividing cells form a mass called a "tumor". ¡¢£¢¤¥ ¦ STAGES OF CANCER PROMOTION --> Tumor Formation - continued… Benign Tumor- A "localized" tumor which usually causes little harm to the individual.little harm to the individual....
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This document was uploaded on 11/01/2011 for the course BSC bsc1005l at FSU.

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Cancer_SciMethod - ¡¢£¢¤¥ ¤ CANCER CANCER a group of diseases characterized by uncontrolled growth and spread of abnormal cells Cancer is

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