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				Re: What is Ki67?
			 
			 
			
		
		
		
		a simplified way to look at it is as a marker of how quickly growing a cancer is.  It is reported as a percentage which represents the percentage of cells in the field of view of the microscope that are undergoing cell division at any one time.  The higher the percentage, the faster growing the tumor. 
		
	
		
		
		
		
		
		
		
		
		
	
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