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SEM micrographs of the porosity in CPC scaffold. (A) After the dissolution of mannitol porogen by immersion for 1 d, macropores in CPC were created in the shapes of the entrapped mannitol particles. (B) Examples of pore interconnection, with arrows indicating the open connections in the bottom of a macropore. The macropore size in CPC ranged from approximately 50 to 343 µm, with an average of 218 µm.
