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Images of average perforated cylindrical scaffold. (A) A printed layered perforated cylindrical scaffold. (B) A sintered scaffold. (A and B) show images of the overall structures of the scaffolds. (a1 – a2) and (b1 – b2) show the struts of the 3D printed scaffolds, and (a3 – a4) and (b3 – b4) are the SEM images of their microstructures.
