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Mechanical properties of the prepared scaffold samples: Panel (A) exhibits the stiffness results of the samples; panel (B) shows the Young’s modulus results of the samples. Black column #1 is the pure PCL scaffold, black columns #2–#5 are samples with micron-sized Fe3O4 (μm-2 to µm-5 in sequence), and white columns are samples with nano-sized Fe3O4 (nm-2 to nm-5).
