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Universal testing machine (A), custom clamps for axial tensile tests (B) and circumferential tests (C,D), tensile stress–strain curves of four different bilayer scaffolds (BS1, BS2, BS3, BS4) by axial tests (E) and circumferential tests (F). Estimated burst pressure evaluated for four different bilayer scaffolds, * indicates the significance p ˂ 0.05 (G) and degradation rate in PBS solution (H).
