Brain cells taken from fetuses may be able to replace some of those killed in a stroke, U.S. researchers reported on Monday. Implanting the brain cells in rats showed that the immature brain cells found their way to the area of stroke damage and stayed alive -- an important feat, because the damage caused by stroke often kills off neighboring cells, too. The cells may also offer a way to treat devastating brain diseases and spinal cord injuries, the team at Stanford University in California said.
