Fig. 1

Characterization of electrospun micro/nanoscaffolds and morphological changes in EpSCs on scaffolds. a FE-SEM image of the arrangement and diameter distribution of micro/nanofibers in the PCL+CA fiber scaffold. Scale bar = 1 μm, 5 μm. b Stress-strain curve of the micro/nanofiber scaffold. c FE-SEM images of EpSC-seeded micro/nanofiber scaffolds. Scale bar = 5 μm, 50 μm, 3 μm, 10 μm. d Cytokeratin 19 (green) and β-tubulin (red) staining of cells seeded in IV collagen-coated culture dishes and in scaffolds. Scale bar = 50 μm, 10 μm. *P<0.05 and ***P<0.001 vs control group