[gaijin]

A standard way to test is some cells that have been isolated are indeed pluri or totipotent is to inject them subcutaneously, and if you observe formation of a teratorma (that's a special kind of tumor with different cell lineages in it), then you know the cells are, in fact, stem cells.

The results in the above article? Profoundly unsurprising. They've known that FOR YEARS.

Now, I'm against using ES cells. But there is still the possibility that this research can teach about how the cell life cycle of adult cells, pattern of differentiation, etc.

[GovernmentShrinker]

Adult stem cells have also been found to cause cancer. http://www.newscientist.com/channel/sex/mg18624965.200

[conservative blonde]

So we kill someone at a beginning stage of his or her life just to see how the killing process goes? No thanks. The Nazis did tests like that in the 1940s. If America goes that path, we will end the same way as the Nazis did. We have many successes with adult stem cells right now and that research doesn't kill human life and doesn't produce tumors or body rejection.