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639 bytes added ,  02:56, January 14, 2008
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===radiation therapy===
 
===radiation therapy===
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Radiation therapy involves the use of precisely-targeted [[radiation]] to destroy cancer cells.  Because radiation damages [[DNA]] and thus has the ability both to treat and to cause cancer, this method of treatment must be administered by physicians highly-skilled in [[physics]].
    
===surgery===
 
===surgery===
 
The goal of cancer surgery is to physically remove the abnormal cells.  This becomes more difficult after the cancer spreads.  Often, chemotherapy is used either before or after surgery to kill cancer cells that have [[metastasis|metastasized]].
 
The goal of cancer surgery is to physically remove the abnormal cells.  This becomes more difficult after the cancer spreads.  Often, chemotherapy is used either before or after surgery to kill cancer cells that have [[metastasis|metastasized]].
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===immunotherapy===
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The immune system contains a number of cell types, such as [[NK cells]] and [[cytotoxic T cell|killer T cells]] that have the capability to destroy other cells that have become infected with viruses or have become cancerous.  [[Immunotherapy]] utilizes these natural defenses against tumor cells.
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===new and experimental treatments===
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==References==
 
==References==
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