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Models and gross morphology of scaffolds. (a) 3D models of PCL scaffolds, including SL-P, ML-P, DL-P and PCL-gradient. (b) Gross morphology of PCL scaffolds. (c) Gross morphology of PCL/ALMA scaffolds. PMA, PCL/ALMA scaffold; PCL-gradient-T, the top of the PCL-gradient scaffold; PCL-gradient-B, the bottom of the PCL-gradient scaffold; PMA-gradient, PCL-gradient scaffold impregnated with ALMA
