An American biotech company is about to start the world's first study using human embryonic stem cells.
The project focuses on repairing spinal cord injuries. The stem cells will be injected into people who can use their arms, but can't walk.
The U.S. Food and Drug Administration approved the measure this week.
Stem cell studies are controversial, because they create a live embryo and then destroy it.
The New York Times reports there could be a backlash against using stem cells if this new therapy proves unsafe or doesn't work.
Sources: CBN News, New York Times