Figure 3: Cell viability after 24 h exposure to neural induction medium. The relative number of cells per well was determined using the MTT assay. The data presented are the mean percentage cell viability ± SD. Noninduced - 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. The comparative means of non-induced and induced patients resulted in non significative difference with P < 0.464 at t-student test.