This is very good news. Embryonic stem cell research has enormous potential for our most deadly diseases and crippling injuries. Of course some pro-life advocates will regard using such cells as supporting or even committing murder, so it is not without controversy. I respect their concerns and perspective, but being pro-choice, I see the matter differently. I see tremendous hope in this new research:
A note on the ethical issue at stake here: does using Embryonic stem cells in research and/or healing of adult humans, constitute murder? There is no way to answer this question without first doing some metaphysics and asking what a person is, what rights if any non-persons or potential person might have (which in turn requires an analysis of what rights are and how we come to "get" them), and when personhood begins. To be for or against stem cell research is to have a definite position on these matters. And naturally we need to know something about Embryology if we are to know the facts of development.