Figure 2. Preparation and characterization of BMSCs-GSSM-gel. (A) Freeze-dried and crushed skin mucus of salamanders. (B) The BMSCs-GSSM-gel was prepared. (C) Size observation of BMSCs-GSSM-gel with SEM. (D) HE staining was performed to investigate BMSCs-GSSM-gel. (E) Rhodamine staining was performed to investigate BMSCs-GSSM-gel. (F, G) BMSCs differentiation was evaluated by observing CD31 and vWF.