天花曾经是一种可怕的疾病,它夺去了很多人的生命。有一次,英国医生勤纳被请去牧场出诊,从牧场主嘴里他意外听到挤牛奶的少女很少有出天花的。于是,他下决心观察,发现挤牛奶的少女确实很少有感染天花的,只不过这些姑娘很多人手上都生过一些脓包疮。这个问题,刺激着勤纳,终于,他用姑娘手臂上的脓包做出了第一个预防天花的疫苗,为人类带来了巨大的福音。这就是同学们至今还在受益的免疫方法——种牛豆。同学们,勤纳的这种拉开了免疫学序幕的思考方法就是:水平思考法。 Smallpox was once a horrible disease that claimed the lives of many people. Once, the British physician Dinah was invited to visit the ranch. From the rancher’s mouth, he accidentally heard the crowd of young girls who milk milk. As a result, he resolved to observe and found that young girls who milk milks rarely have smallpox infections, except that many of these girls have had some pustular sores in their hands. This problem, stimulating Qinnah, finally, he used the pustule on the arm of the girl to make the first vaccine to prevent smallpox, and brought great gospel to mankind. This is how the classmates are still benefiting - a kind of bean. Students, Qin Na this opened the prelude to immunology is the way of thinking: the level of thinking method.