So what we do with this is, for example, we can look at two patients, one that responded to a drug and one that didn't respond to a drug, and ask, "What's going on differently inside of them?"
方法是 比如，我们可以比较两个病人 一个对药物有阳性反应，另一个药物不起作用。 然后问： “他们身体内有什么不同？”