Fig. 2From: Novel hybrid polyester-polyacrylate hydrogels enriched with platelet-derived growth factor for chondrogenic differentiation of adipose-derived mesenchymal stem cells in vitroFT-IR spectra of the PCL-HEMA macromonomer (a). FT-IR spectra of the PCL-P(HEMA-NIPAAm) hybrid copolymer (b). 1HNMR spectrum of the PCL-P(HEMA-NIPAAm) hybrid copolymer (c)Back to article page