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							Ƽ  α ¿ ̿ մϴ. 
	
						 
					 
					
					
					
					
					
					
					
						
						
						3 Part   å ' ΰ?'  . ڴ  Ŭ    Ȯ ̶ ƹ͵ .  οϸ  ȮǼ  ̾߱Ѵ. HIV 缺    ȯڵ ܵ   ߴµ   Ŀ ù ˻  缺̾  20, ڽ ȯڿԴ Կ   ްڳĴ  No ϴ ΰ ,  輺 Ȯǽ  Ŀ °  ƺ     ӿ Ŵ  ü,     캴 û Դϴ.   ٰ   Ǿ. ڰ þ Ƿʵ  ״ Ǻο  ´١.   ִ ȮǼ  ȯ, 迡    ū ݰ ǰ   ߱ ʹ Ŵ ܵ鿡    ȮǼ  ڰ ҷ´.   å  ٺ ϴ ǰ   ʴ´. ڴ  л  1~2ð  ǥ  ٲٴ (Ȯ ڿ ) ˷ְ,  ؼϴ ɷ ƮغҴ.    , ܿ 10ۼƮ   90ۼƮ ö. ̷ װ  鿡  ذ  ʹ ϰ ϱ .   ǥ    ˾ƺ  ִ   ٲٸ ȴ.  ó  衯κ   ִ. 
						
					 
					
				
					
					
					
						
						
						 : б мö  ڿ(natural kinds) , ö,     . Ȳ½ : б ǰп  ϰ ϴб ǰ  ִ. ǰ  ַ ϰ ְ,   ڷ ǥϰ ϴ   ִ. 
					 
					
					
					
					
						
						
						Part 1  ΰ Chapter 1  ȮǼ Chapter 2  ȮǼ  ȯ Chapter 3   Chapter 4   Part 2 Ȯ   Chapter 5    Chapter 6      Chapter 7    Chapter 8  д Ƴ Chapter 9  ǰ  Chapter 10  DNA  Chapter 11    Part 3  ϴ  Chapter 12   ´  ǿǴ° Chapter 13    Chapter 14