Fig. 5
TEM images. Bacteria with or without GO, GO-POAA, and GO-chitosan are characterized by TEM: the formation of an external barrier of GO sheets and GO-based materials on the surfaces of these two bacteria after 3 h of incubation with a either nutrient b or PBS, respectively. (GO materials, up to 20 μm wide, were delivered in a dose of 50 μg mL−1)