The embryonic Carcinoma stem cell line‏ (ECSCs;NT2) was cultured in DMEM (Gibco, UK)‏ supplemented with FCS (Gibco) and 2 mM L-glutamine.‏ Cell passage was carried out by treatment with‏ trypsin (Gibco), and cells were seeded in new dishes at‏ a 1:5 ratio. Neural induction of these cells was accomplished‏ in growth medium supplemented with different‏ inducers and factors over a three-month period.‏ Initially, 2×104 cells/cm2 were seeded in adherent tissue‏ culture dishes in the presence of 10 μM RA for a‏ month. The resultant compact neuro epithelial cells‏ were dissociated by trypsin and seeded in a 3:7 ratio in‏ new adherent culture dishes in the presence of 1 μM‏ cytosine arabinosin (Sigma, USA) only for the first‏ week of this period, 10 μM fluorodeoxyuridine‏ (Sigma, USA) and 10 μM uridine for a month. For‏ neural maturation, the apparent cell aggregates were‏ mechanically dissociated by hitting to the side of the‏ tissue culture dish. Dislodged aggregates were seeded‏ in poly-D-lysine (Sigma)-coated dishes in the presence‏ of 1 μM cytosine ara binosin (for the first week) and‏ 10 μM fluorodeoxyuridine (16 (link)).
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