Director of the Spine Service at Shriners, where all care is free. Has a grant to work on marrow cell transplantation, in which lost or damaged nervous system cells are repaired or replaced. “Parents of paralyzed children are willing to do almost anything. Clinics in China, Peru, wherever, make promises of stem-cell therapy that may not be any good. But the FDA has approved an embryonic stem-cell trial, and we’re now able to make the exact type of cells we need. We’re not there yet, but in the next five years, we’re going to see major strides.”