美国麻省理工学院的科学家通过实验发现一种可清除记忆的基因Tet1。若能够找到扩大该基因活动能力的方法,将给患“恐惧症”的人带来福音,甚至改变人类的生命。科学家们对Tet1正常和这种基因遭破坏的老鼠的学习行为进行了比较。他们每次把这两组老鼠放进一个笼子时,对它们轻微电击,目的是让老鼠对笼子产生恐惧感。然后研究人员把它们放回没有实施电击的同一个笼子时,两组老鼠的行为出现不同。有Tet1基因的老鼠并不害怕这个笼子, Massachusetts Institute of Technology scientists discovered through experiments a gene that clears memory Tet1. If we can find ways to expand the activity of this gene, it will bring good news to those who suffer from phobia and even change human life. Scientists compared the learning behavior of Tet1 normal and this gene-disrupted mouse. Each time they put the two groups of mice in a cage, they lightly shock them in order to give the mouse a sense of fear of the cage. The researchers then behaved differently when they returned to the same cage without an electric shock. Rats with the Tet1 gene are not afraid of this cage,