In 2009,Sierra Leone President Ernest Bai Koroma launched a review of the education system following abysmal exam results at both the primary and secondary level.

VOA: standard.2010.02.25

How is your immune system going to recognize that this virus is there causing bad results if it's living inside of a cell and doing all its business inside a cell where antibodies can't get to it?

你的免疫系统怎样才能识别,作恶多端的病毒呢,如果它隐藏在细胞中进行繁殖,而抗体又无法进入细胞,那该怎么办

耶鲁公开课 - 生物医学工程探索课程节选