来自《耶鲁大学开放课程：生物医学工程探索 第7集 第7集》

• 
  
  you amplify and carry the signal forward.
  信号被放大 并不断向前传递
• 
  
  That's what's illustrated here
  这里显示的是
• 
  
  with the end result being that
  在信号放大传递后
• 
  
  there's some change in the life of the cell.
  细胞内发生的变化
• 
  
  What would that change be?
  这些变化是什么呢
• 
  
  Well, it might be that this signal is a signal to divide.
  这可能是那些让细胞开始分裂的信号
• 
  
  'It's time for you to reproduce',
  "该是复制的时候了"
• 
  
  and so the cellular response would be mitosis.
  细胞就开始进行有丝分裂
• 
  
  It could be that that signal is 'you need more glucose',
  这信号还可能是 "需要更多葡萄糖"
• 
  
  and so the cellular response is
  细胞的反馈就是
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  to create more glucose transporters
  产生更多的葡萄糖载体
• 
  
  to bring more glucose into the cell.
  将更多的糖分子输送进细胞