The Japanese government has given the go-ahead to the University of Tokyo to conduct experiments on human-animal hybirds, which may now be carried to term. Currently, on the international stage, hybrid embryos are not allowed to develop for more than 14 days. In March, Japan was the first country to remove such restrictions. The first experiment of its kind to be approved will involve human cells grown in mouse and rat embryos. According to the experiment lead, geneticist Hiromitsu Nakauchi, there will be no attempts to bring embryos to term…