As we are in the long term war on cancer (that was started 40+ years ago - are we headed for another Hundred Years War?), they are finally figuring it out. To win a war, stop focusing on the soldiers and take out the generals who are in charge. Sounds kind of like a 'doh' situation to me.
Basically generals are cancer stem cells, soldiers are regular cancer cells. Most commonly available cancer treatments go after the soldiers and don't kill off enough generals. Well now this is changing.
I don't want to get in to a debate here about embryonic stem cells because this is not the place. Stem cells can come from umbilical cord blood or from adult bone marrow. I have several friends who have had stem cell transplants using bone marrow and one person who had a siblings umbilical cord cells. It seems that the results are showing some progress. This makes me happy. I also like the fact that it is being used and not just another 50 year test.
Maybe I'll be optimistic on this.