(glial fibrillary acidic protein), NSE (neuron-specific enolase)
Table 1: Immunocytochemistry of ADAS cells to assess neuronal and glial markers. Non-induced - ADAS cells grown under control conditions in DMEM, 10% FBS, 1% streptomycin-penicillin and 0.1% gentamycin. Induced - ADAS cells after 24 h culture in neuronal induction medium. Diaminobenzidine (DAB) served as a brown chromagen. The percentage of cells showing specific immunolabeling was quantified in three randomly selected fields at 200X with a bright field microscope. The number of cells positive for immunolabeling was divided by the total number of cells in the same field as determined by phase optics to obtain the percentage of cells that were immunolabeled. All images were obtained at 200X magnification. NESTIN (marker of immature neural cells), GFAP (mature glial cells - astrocyte), NSE (early neuronal) e S100 (nuclei of astrocytes and Schwann cells).