A national survey finds that one in four parents in the U.S.believe that vaccines containing thimerosal cause autism in healthy children and one in eight have refused at least one ecommended dose of vaccine.

VOA: standard.2010.03.23

Fungi which don't often cause infections in people with healthy immune systems but can under some circumstances, and can be tremendous problems in patients that have weakened immune systems.

真菌在免疫系统健康的情况下通常,不引起感染,但在某些情况下也会感染,那就成了极大的问题,在免疫系统脆弱的病人体内

耶鲁公开课 - 生物医学工程探索课程节选