Fig. 2

Viability and proliferation of USCs seeded on SIS membranes. a Live/dead staining of the SIS+USC composites cultured in normoxia (i.e., the SIS+USC (N) group) or preconditioned in hypoxia (i.e., the SIS+USC (H) group). Green fluorescence, live cells; red fluorescence, dead cells; scale bar, 50 μm. b H&E staining of the SIS+USC composites. Scale bar, 50 μm. c SEM observation of the SIS+USC composites. Scale bar, 10 μm