The Vatican issued a 32 page statement entitled "The Dignity of the Person" that outlines its views "reinforcing the church’s opposition to in vitro fertilization, human cloning, genetic testing on embryos before implantation and embryonic stem cell research."
Its unfortunate that the catholic church takes this stand against biomedical science. It puts catholic doctors and biomedical researchers into tricky situations.
Here is a link to the article in the New York Times:
Here is another link to a discussion on Religion and Science found on this discussion board: