I found this on cordblood.com
<div class="FTQUOTE"><begin quote>The ability of cord blood stem cells to differentiate, or change into other types of cells in the body is a new discovery that holds significant promise for improving the treatment of some of the most common diseases such as heart disease, stroke, and Alzheimer's.</end quote></div>
Apparently, from what I've read, there have been better rates of sucessful adult and cord blood stem cell treatment, with less risk of tumors and rejection than with embryonic cells.
I hope that helps the cord blood question <img src="i/expressions/face-icon-small-wink.gif" border="0"> .