Recently adult stem cells have been identified with the ability to create new tissues.

The possibilities opened up by research with adult stem cells are very hopeful and much closer.

But even adult stem cells seem to present little provocation to the immune system.

This was then coated with adult human stem cells and the researchers hope the heart will start beating in the coming weeks.

"We made a decision to focus our labs because everything that we need to do can be done with adult stem cells."

However, the Church approves research with adult stem cells.

"Was Hamlin using these adult stem cells as well?"

Most adult stem cells are specialized to repair just the tissue they are found in.

They are adult stem cells, taken from my blood - "harvested," in the terminology - last December.

But adult stem cells can divide only a finite number of times and in older or diseased patients may have a limited lifetime left.