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3D Core/shell printing. A C/S scaffold with the shell composed of ALG-MC-LAP and the core of 3% alginate, coloured with blue ink for visibility, after 1 layer of 3D printing (A). A magnified image of the C/S strand (B). C/S scaffold of 4 layers after finishing the 3D printing (C). A full strand (i.e., no core) 3D bioprinted scaffold of 4 layers (D).
