Silver Book Fact
Use of stem cells to create neurons could enable the study of the response of human cells to new drugs in vitro, early in the drug development process.
Woolf, Clifford J. Overcoming Obstacles to Developing New Analgesics. Nature Med. 2010; 16(11): 1241-7. http://www.nature.com/nm/journal/v16/n11/full/nm.2230.html