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Porous scaffold characterization. Electron micrographs of (A) PU-PVCL6K, (B) PU-PEG1K-PVCL6K and (C) PU-PEG2K-PVCL6K porous scaffolds. Typical stress-strain curves of PU-PVCL6K, PU-PEG1K-PVCL6K and PU-PEG2K-PVCL6K porous scaffolds in (D) dry and (E) wet states.
