Fig. 4From: Synergistic effect of chitosan-alginate composite hydrogel enriched with ascorbic acid and alpha-tocopherol under hypoxic conditions on the behavior of mesenchymal stem cells for wound healingFTIR spectrum of chitosan and alginate pure and their combination as CA (a–c) and FTIR spectrum of AA, TP pure and their combination with CA (d–f, respectively)Back to article page