> By progressing development just one day further, they have proved development of the whole brain. If you progress development to 20 days (gestation period fo

> By progressing development just one day further, they have proved development of the whole brain. If you progress development to 20 days (gestation period for mice), do you get a live mouse? I assume not, but the article doesn’t tell us what happens to the embryo if you continue the experiment. > UK law permits human embryos to be studied in the laboratory only up to the fourteenth day of development. The restriction on human embryos seems to imply that non-human embryos are not restricted the same way. So I presume they didn’t terminate the mouse experiment for legal reasons.