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35 bytes added ,  02:56, January 14, 2008
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===immunotherapy===
 
===immunotherapy===
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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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]] involves the enhancement or potentiation of these natural defenses against tumor cells.
    
===new and experimental treatments===
 
===new and experimental treatments===
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