Editorial: Stem cell therapies without tears

时间:2019-03-02 08:07:08166网络整理admin

EXPECT to hear a familiar refrain over the coming days: “There’s no need for embryonic stem cells.” It is the likely response of those who oppose any interference with human embryos to the exciting news that adult mouse cells can be reprogrammed to an embryonic state by boosting the activity of just four critical genes (see “From adult to embryo”). There are good reasons to question the campaigners’ claims. The trick has yet to be achieved in human cells. Even if that can be done,