Fig. 2. Viability and morphological variance of differentiated SH-SY5Y cells on the control, CNT network and graphene film. (A) Differentiation scheme. (B) Bright field images. (C) Viability. (D) Apoptotic rate. (E) Cell spreading area. (F–I) Axon length of differentiated cells on the control, CNT and graphene film. Error bars represent the standard deviation of three replicates. * for p < 0.05, ** for p < 0.01. Scale bar represents 100 μm.
