[Retracted] Exosomes Derived from Human Bone Marrow Mesenchymal Stem Cells Stimulated by Deferoxamine Accelerate Cutaneous Wound Healing by Promoting Angiogenesis

Figure 3

Cutaneous wound healing in diabetic rats is accelerated after Exos and DFO-Exos transplantation. (a) Gross view of wounds treated with Exos, DFO-Exos or PBS on days 0, 7, and 14 after wounding. (b) The wound-closure rates on specific days of three groups. P < 0.001; P < 0.01 versus control, ^### P < 0.001 versus Exos group. (c) H&E staining of wound sections from three groups at 14 days after wounding. The black arrows point out the scar edges. Scale bar = 1000 μm. (d) Quantitative analysis of the scar widths. P < 0.001 versus control, ^### P < 0.001 versus Exos group. (e) Masson’s trichrome staining for the evaluation of collagen maturity. Scale bar = 100 μm (top) or 50 μm (bottom).