- Embryonic stem cells appear to be subject to random and uncontrollable growth. On the other hand, adult stem cells seem to be more predictable in responding to the growth factors and hormones that function to re-direct their development.
- Embryonic stem cells have been known to grow into the wrong type of cells, in some cases such as hair and teeth growing in the brain of treated patients.
- Perhaps the greatest clinical problem with implanted embryonic stem cells is that the body flags them as foreign material. Consequently, they are subject to rejection by the patient's immune system.
The fools running this site push research into the therapeutic potential of adult stem cells, claiming they are just as useful or even more useful than embryonic stem cells. Also untrue. This goes way beyond simple ignorance to deliberately twisting scientific knowledge to misinform people and it's pretty sad. All the more reason for real scientists to get on the ball in educating the public.