a Schematic overview of differentiation strategies involving a four developmental stage protocol used to obtain striatal MSNs. b Quantitative assessment of dendritic development in terms of total dendritic length and dendrite number after cell plating (n = 10). c Immunofluorescence images of markers of various stages of differentiation. TUJ1, DARPP32, GABA, and GAD65/67 were used to stain striatal GABA neurons, and DAPI was used to stain the nucleus. Scale bar = 50 μm. d Quantification of the expression of markers of various differentiation stages. Efficiencies are presented as the percentage of positive cells ± SEM in all fields counted (n = 3). EB embryoid body, NE neurosphere, SHH sonic hedgehog, PUR purmorphamine, MSNs medium spiny neurons.