Figure 7
Cytotoxicity of nGO-PEG and nrGO-PEG in A549 cells. (A) Relative cell viability after treatment with different concentrations of nGO-PEG and nrGO-PEG for 24 h. (B) Relative cell viability after 808 nm laser irradiation (0.6 W/cm2) for 5 min for control cells and the cells cultured with different concentrations of nGO-PEG and nrGO-PEG. (C) FCM analysis of cell death induced by laser irradiation for control cells and the cells cultured with 6 μg/mL of nGO-PEG or nrGO-PEG for 2 h.