Figure 5. SEM observations of the cross-sections and surfaces of PVA coated (A–C) and PVA/HA coated samples with R = 0.4 (D–F), 0.2 (G–I) and 0.1 (J–L). Images C, F, I, andL show the exact same ROIs as B, E, F, andK using backscattered electron imaging. Scale bar is 100 µm.