Figure 4.

Representative images of the titanium plates and screws used in in vivo experiments. (A and B) are low-magnification SEM images of a coated plate and screw, respectively. (C) is a photograph of an uncoated plate and screw. Coated plates and screws showed the same gross appearance and microscopically smooth surface (A and B). (E and F) are SEM images of coated plate and coated screw surfaces, respectively, showing the clear presence of Se nanoparticles compared to an uncoated surface (D).