Fig. 6From: Induction of chondrogenesis of human placenta-derived mesenchymal stem cells via heparin-grafted human fibroblast derived matrixAnalysis of chondrogenesis of hPMSCs from subcutaneously implanted collagen spheroids at 4 week. PKH-26 labeled cells (red) and immunofluorescence of Col II (green), and merged images with DAPI staining (blue). Scale bar is 50 μmBack to article page