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The degradation of GelMA, GelMA-O5 and GelMA-O5/rGO hydrogels in pure PBS solution (A) and PBS solution containing 1000 U/mL Lysozyme (B) SEM images of the surface morphology of hydrogels at day 5, either in the presence (C) or absence (D) of 1000 U/mL Lysozyme. (E) GelMA-O5/rGO hydrogel was connected to a circuit and illuminated an LED. (F) Conductivity of the GelMA-O5/rGO hydrogel with different concentration of rGO.
