Xiao Xiao, as the rodent is called in its native Chinese, was one of dozens created from induced pluripotent stem cells (iPS cells) and born to a surrogate mother.

• 这个啮齿动物，当地的汉语名字叫小小，是一群从诱导多能干细胞中创造并由代孕母亲生产的小鼠中的一个。