Figure 5. GSC-EXsmiR-21 had better effects than GSC-EXscon and GSC-EXssc on promoting the angiogenic ability of ECs.

(A) representative images and the summarized data showing the tube formation ability of ECs treated by various types of GSC-EXs; bar: 500 μm; (B) summarized data showing the migration ability of ECs in different treatment groups. *p < 0.05, vs. vehicle; ⁺p < 0.05, vs. GSC-EXs^con or GSC-EXs^sc; ^#p < 0.05, vs. GSC-EXs^miR-21 or GSC-EXs^miR-21+siRNA^sc. Data are expressed as mean ± SEM; n = 4/group.