Non-reproductive cloning is legal in the United Kingdom. Since the early 199os British scientists have been allowed to create human embryos for research purposes and perform experiments in therapeutic cloning. The Human Fertilization and Embryology A of 199o established a system for regulating the creation and use of embryos. Research leading to reproductive cloning is banned, but therapeutic cloning in order to generate healthy replacement for diseased tissues and organs is permitted. Some ethicists and religious leaders object to all experiments on embryos, while others argue that even therapeutic cloning should be banned because it would eventually lead to reproductive cloning While human and human stem cell research are actually technicall cloning distinct these issues have become virtually inseparable because both involve the use of human embryos.