Figure 4.

GO-100 and GO-20 graphene sheets increase the leakage of LDH. (A) TM3 cells were treated with GO (20–100 µg/mL) and GO-20 (20–100 µg/mL) for 24 h, and LDH activity was measured at 490 nm using an LDH cytotoxicity kit. (B) TM4 cells were treated with GO (20–100 µg/mL) and GO-20 (20–100 µg/mL) for 24 h, and LDH activity was measured at 490 nm using the LDH cytotoxicity kit. At least three independent experiments were performed for each sample. The results are expressed as the mean ± standard deviation of three independent experiments. The treated groups showed statistically significant differences from the control group by Student’s t-test (* p < 0.05).