Application of extracellular vesicles from mesenchymal stem cells promotes hair growth by regulating human dermal cells and follicles

Figure 4 Human mesenchymal stem cell-derived extracellular vesicles treatment promoted human hair follicle shaft elongation. A: Representative images of human hair follicles of an individual after human mesenchymal stem cell-derived extracellular vesicles (0, 0.05, and 0.01 μg/mL) and XAV939 (5 μM) treatments; B: Quantified data of hair shaft elongation on day 6 (n = 6). (^aP < 0.05; ^cP < 0.001. Student’s t-test was used for comparison). hMSC-EVs: Human mesenchymal stem cell-derived extracellular vesicles.