The viruses appear to harm the bees' ability to use their genetic material to produce proteins needed to fight infections.

VOA: special.2009.09.15

We'll start with Week 2 talking about Genetic Engineering; what's DNA, how can it be manipulated, how is our ability to manipulate DNA led to things like gene therapy which can now be done in people.

从第二周开始我们会讲基因工程,什么是DNA,怎么样才能操控它们,我们如何操作DNA,并将它应用于人类的基因疗法

耶鲁公开课 - 生物医学工程探索课程节选