Vatican raises opposition to embryonic stem cells
The Vatican is raising its opposition to embryonic stem cell research, in vitro fertilization and human cloning to a new level.But the Vatican is also saying in a major new bioethics document that it approves of some forms of gene therapy and encourages stem cell research using adult cells.
While there is no doubt that the ethical controversy surrounding human embryonic stem cell research has given rise to an uncertain policy environment, the true impact of years of frequent policy changes has not been fully assessed.