And,these are occurring at a time when the global economic crisis is making it more difficult to maintain good health, especially in the developing world.

VOA: standard.2009.05.18

If you take cells from my skin and disperse them and we'll talk about ways to do that next time, and you try to maintain them in a beaker.

如果从我的皮肤上取出些细胞,并消化它们,具体做法下节课讲,并把它们培养在烧杯里

耶鲁公开课 - 生物医学工程探索课程节选