Fig. 2From: Epithelial differentiation of human adipose-derived stem cells (hASCs) undergoing three-dimensional (3D) cultivation with collagen sponge scaffold (CSS) via an indirect co-culture strategyCharacterization of hASCs by cellular morphology, immunophenotyping and differentiation potential assay. a Typical morphology of hASCs. b Immunophenotyping of hASCs (P3), histograms indicate the positive mean value of each marker. c Mineralization following osteogenic differentiation as visualized by Alizarin Red stainingBack to article page