Scientists have learned that just a handful of genes can reprogram a cell back to a state in which, like an embryonic stem cell, it can generate any type of cell in the body.

• 科学家已得知只要少量的基因就可以改编细胞，使其重回胚胎干细胞的状态，而胚胎干细胞可制造身体中任何一种细胞。