知识世界

History:Immune System

During the course of evolution， the human immune system has developed into a powerful， defensive mechanism against bacteria， virus and parasites. The first fruits for attempts understanding the body's immune system were primely made by two researchers. One is the Russian biologist Ally and the other is the German chemist Paul.

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  History： Secrets of the Anasazi

  
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  History： Alfred Nobel and Dynamite

  
• 03

  History： What The Ancients Did for Us — The Greeks

  
• 04

  History： Mysterious Places — Chartres France

  
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  History： Seven Wonders of Ancient Rome

  
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  History： The Egyptians

  
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  History： Planck and Quantum Physics

  
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  History： Mysterious Places — Pompeii Italy

  
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  History： Transportation Achievements

  
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  History： Poisoned