We want to talk about that same concept today in terms of polio, which is a vaccine that is both made and manufactured in a different way than the smallpox vaccine.

今天我们以小儿麻痹症为例继续讨论疫苗,脊髓灰质炎疫苗的研制与,大规模生产方式同天花疫苗截然不同

耶鲁公开课 - 生物医学工程探索课程节选