20120237484Generation of Functional Basal Forebrain Cholinergic Neurons From Stem Cells - The present invention provides method, compositions, and systems for generating basal forebrain cholinergic neurons (BFCNs) using FGF8, SHH, LXH8, GBX1, or vectors encoding these ligands, as well as using such BFCNs to treat neurological disorders such as Alzheimer's disease.09-20-2012