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(A,B). Cell morphology in gelatin and elastin hybrid PEG hydrogels at d1, 3 were presented in (A), while that of day 7 and 10 showed in (B), respectively. The first row of each time point is the live cell-staining (green color, Calcein AM), while the second row is the dead cell-staining (red, EthD-1). All the scale bars are 50 µm.
