Nerve cells derived from induced pluripotent stem cells have the potential to reverse paralysis.Credit: IKELOS GmbH/Dr. Christopher B. Jackson/SPLA paralysed man can stand on his own after receiving an injection of neural stem cells to treat his spinal cord injury. The Japanese man was one of four individuals in a first-of-its-kind trial that used reprogrammed stem cells to treat people who are paralysed.Another man can now move his arms and legs following the treatment, but the two others did n...