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Temperature-dependent phase transition and elastic modulus. (A) Transparent aqueous solution of RTG at room temperature (B) turns to physical gel (white) at 37 °C. (C) Temperature-dependent elastic modulus of 1% (w/w) gels of PSHU-PNIPAAm-laminin (red), PSHU-PNIPAAm-lysine (green), and PSHU-PNIPAAm (blue). The chemical incorporation of laminin greatly increases the elastic modules of the polymeric system.
