Despite this experiment showing no life extension, I find it promising. Note that breathing was not targeted in the implantation. First the neurons formed well from cells with over 70% developing. Secondly, the neurons were not killed off by ALS suggesting that an eventual therapy will grow neurons faster than they die off. I suspect continued development of this approach will also reveal new aspects of the disease that may open other therapy approaches. Imagine where we would be now if Bush hadn't slammed the door on federal funding.