Where did they get the human fetal brain? The idea of it is disturbing to me.

From Nature online:

" In the current study, published in Proceedings of the National Academy of Sciences1, researchers isolated stem cells from the brains of aborted fetuses and grew them into large numbers in the laboratory. The cells were then injected into the brains of monkeys with a severe form of chemically induced Parkinson's disease."

http://www.nature.com/news/2007/0706.../070611-2.html

I don't know if everyone has access to this article. Please let me know if you don't.