Credit: Pixabay/CC0 Public Domain A stem cell treatment helped improve the motor function of two out of four patients with a spinal cord injury in the first clinical study of its kind, Japanese scientists said. There is currently no effective treatment for paralysis caused by serious spinal cord injuries, which affect more than 150,000 patients in Japan alone, with 5,000 new cases each year. Researchers at Tokyo's Keio University are conducting their study using induced pluripotent stem cells (i...