This Is MS Multiple Sclerosis Community: Knowledge & Support

"My job is to decrease suffering, and if we overstate this and raise hopes falsely and then it doesn't work out, it will hurt people rather than help them," Schwartz said.

"I think this is a turning point. It's been 13 years since the discovery of human embryonic stem cells," Lanza said. "We've been reading about this. It's been one of the hottest topics of biology. And this is the first report of the effects of these cells actually transplanted into a human patient. So it's been a long time in the works."