Do you have recommendation for getting neural stem cells to differentiate into astrocytes, not neurons?

Answer

Neural stem cells can be differentiated to either neurons or astrocytes following the protocol described at this weblink:

http://www.lifetechnologies.com/us/en/home/references/protocols/neurobiology/neurobiology-protocols/differentiating-neural-stem-cells-into-neurons-and-glial-cells.html