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SEM images of the cross-sectional surfaces of the HLC/n-HAp scaffolds before ((a), (b), and (c)) and after ((d), (e), and (f)) Co60 irradiation. ((a), (d)) The scaffolds display interconnected pores ranging in size from 120 to 300 μm. ((b), (e)) A typical macroporous microstructure for the scaffolds. ((c), (f)) The pore walls in the scaffold.
