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SEM micrographs of the 3D-printed PLA, P10, P20, and PC scaffolds at magnification of 200x, 1000 × and 5000x. EDS mapping images illustrate the distribution of calcium (Ca) on the scaffold surfaces. Scale bars represent 200 µm at 200x, 50 µm at 1,000x, and 5 µm at 5000x.
