The Rat Astrocyte Differentiation Medium contains DMEM/F12 w/o HEPES, w/ L-Glutamine (Millipore Catalogue No. DF-042-B), 1X B27-CHEM, 2 mM L-Glutamine (Millipore Catalogue No. TMS-002-C), 1X Penicillin Streptomycin (Millipore Catalogue No. TMS-AB2-C), BMP-4, 50 ng/mL LIF (Millipore Catalogue No. ESG1107) and 1% heat-inactivated fetal bovine serum (Millipore Catalogue No. ES-009-B)