I found it interesting that scientists were expecting that hESCs were more likely to be rejected during transplant than adult stem cells. This does make sense though, adult stem cells come from one's own body, where as hESCs are foreign.
Also, I had never read anywhere else that adult stem cells are rare. I was under the assumption that they were everywhere! As it turns out, they are more difficult to find and harder to culture than hESCs. I also didn't know that adult stem cells can only be cultured into more of the original tissue that they were taken from. Where as hESCs can be cultured into any type of cell.
I'm pleased to have found this information, but still wary, it might not all be completely accurate. For example, they said hESCs were more likely to be rejected from the body, but hESCs also don't produce tumors like adult stem cells do.