Tinkering with embryos up to a limit of 14 days is wrong. What happens when the limit vanishes?

As expected, last month the International Society for Stem Cell Research (ISSCR) updated its guidelines for stem cell research. The marquee guideline is the relaxation of the limit of 14 days on how long a human embryo may be kept alive in a lab. According to the ISSCR the update reflects emerging advances including stem […]