自身"免疫系统"知多少?

　　Christine Biron: The thing about the immune system, is really everyday it keeps us from succumbing to the microbes in our environment. But it’s really heavily armed, and if you can’t hit that balance just right, then your immune system is causing problems that can be more threatening than the infectious organism itself.

　　克里斯廷·拜伦：说到免疫系统，它的确每天都在保护我们不被环境中的微生物侵害。不过，免疫系统是全副武装的，如果你不能很好地保持免疫平衡，那么它就会引起一些比传染性病原体本身更有威胁的问题。

　　You’re listening to scientist Christine Biron, professor of medical sciences at Brown University. She’s talking about the body’s immune system which protects us from disease. Biron studies the role cells called “natural killer” cells play in our body’s immune response. She described them as the body’s “first responders.”

　　这是科学家克里斯廷·拜伦，她是美国布朗大学的医学教授，她正在谈论的是能够保护我们不生病的免疫系统。拜伦研究的这种在我们身体免疫反应中起重要作用的细胞叫做“自然杀伤细胞”，她将其称之为体内的“第一反应者”。