Bone marrow is doing a lot of work in actually curing diseases and ailments. Here and Here
For those of you who think all this stuff about the evils and failures of embryonic stem cell (ESC) research is fabricated by right-wing religious radicals, this article from Nature.com sounds the alarm concerning immune system problems related to ESC. Here are a couple of excerpts:
Most human embryonic stem-cell lines, including those available to federally funded researchers in the United States, may be useless for therapeutic applications. The body's immune defences would probably attack the cells, say US researchers. When embryonic stem cells are added to serum from human blood, antibodies stick to the cells. This suggests the cells are seen as foreign, and that transplanting them into the body would trigger the immune system to reject them. "We've found a serious problem," says Ajit Varki, a cell biologist at the University of California, San Diego.
The problem arises from contamination from the growth and creation process in the lab. There have been no such difficulties with adult stem cells and their cultures.
The hope of miracle cures brought about as a result of ESC research remains a glimmer in the eyes of those who have a lot of money to make if the Federal Government releases the ban on new ESC lines.