Fig. 3. Visualisation of the interaction of nanoparticles with HCT116 cells using dark-field microscopy in the time series mode: treated with graphene oxide (100 μg ml–1) (A and B), treated with kaolin (100 μg ml–1) (C and D), and treated with a mixture of kaolin and graphene oxide (100 μg ml–1) (E and F). Scale bar: 10 μm. Time of exposure to nanoparticles before video recording was 1 hour. Arrows indicate the nanoparticles adhered to the cell surface.
