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The elastic modulus of PEGDMA hydrogels can be controlled by varying the monomer and crosslinker concentration. (A) PEGDMA concentration was varied from 10% to 90%, with photoinitiator-crosslinker concentration at 0.1%. (B) Photoinitiator-crosslinker was varied from 0.04% to 0.8% (w/v), with PEGDMA concentration constant at 90%. Bars indicate SD. PEGDMA, poly(ethylene glycol) dimethacrylate; SD, standard deviation.
