Essentially I wanted to play devil's advocate here for a second with one thought that came to my mind. Now don't get me wrong I am all for stem cell research, and in fact I do not have an issue with the use of embryonic stem cells under reasonable conditions - especially in the case of those that are spare or to be wasted from IVF treatments.
The interesting thought I had in regards to this issue is, how do we know that these adult stem cells have been made to be pluripotent?
One way is to let the cells develop and multiply and see what happens. Although this is not exactly what is done in the study (actually the nucleus of the stem cells was put into a blastocyst) it is for all intents and purposes the same effect. Well... they develop in to an embryo of course.
Does this really solve the image problem that stem cells have?