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SEM structural images of the top surface (A), cross sections (B), and particle distribution (C) of 3D macroporous PPF and PPF/HA scaffolds by SEM. The scale represents 500 μm in (A) and (B), and 30 μm in (C). This qualitative result demonstrates that 3D macroporous scaffolds fabricated by simple salt leaching technique showed interconnective porous structures and more HA particles were seen on the surface as the HA amount included in fabrication increased.
