Investigators have discovered many drugs that cure artificially induced cancers in rodents, but when the substances move into human trials, they usually have rough sledding.

• 研究人员已经发现到，许多药物可以治愈齧齿动物身上人为诱发的癌症，可是一旦把这些药物拿来进行人体试验，之后的路就变得非常的崎岖。