Fig. 5

Light micrographs of tumoral J774 and peritoneal macrophages. Cells were stained with Giemsa after 48 h exposure. (Control) Cells cultivated in microplates without nanomaterials. (GO) Cells exposed to 12.5 μg mL⁻¹ pristine graphene oxide. Black arrows indicate the interaction between the graphene oxide sheets and macrophage surface. (AgNP) cells after exposure to 5 μg mL⁻¹ silver nanoparticles. Black arrows highlight silver nanoparticles internalization. (GOAg) cells after exposure to 5 μg mL⁻¹ graphene oxide-silver nanocomposite. Black arrows indicate nanocomposite flakes in cell media and interaction with cellular surface. MØ macrophage