Figure 6.

Cell viability assays after 24 h (white) and 72 h (striped) of incubation of Caco-2 cells with ND, GO, CNT and RGO at 0.6 µg·mL⁻¹ concentration, free drug CPT (a) and DOX (b) at both 0.2 and 0.8 µg·mL⁻¹ concentrations, and CPT- (a) and DOX- (b) loaded carbon nanomaterials. (* and # represent significance at p < 0.05 when compared to untreated control cells and free drug-treated cells, respectively).