Figure 8. Aged EVs impact the early phases of wound healing in mice. Wound closure assay on mice treated with EVs from old keratinocytes. (A) Representative photographs of full-thickness excisional wounds treated at day 0 (D0) with NaCl (Control n = 4) or with EVs from old human keratinocytes (n = 8) every day from day 0 to day 10 (D10). (B) Quantitative analysis of wound healing closure in each group, expressed as a percentage of the initial wound area (*p-value < 0.05. **p-value < 0.01. Student’s t-test).