Fig. 6
VEGF, TGF-β1, and IGF-1 in cell culture supernatants and the serum of EPC1d, BI1d, and SC groups. a–c The levels of VEGF, TGF-β1, and IGF-1 in EPC and HUVEC culture supernatants. Data are presented as mean ± SEM and were analysed by independent Student’s t test, n = 4. NS, no statistical difference; *P < 0.05, **P < 0.01, ***P < 0.001 vs. the HUVEC group. d–f The sera of EPC1d, BI1d, and SC were obtained. The levels of VEGF, TGF-β1, and IGF-1 in the sera were compared. Data are presented as mean ± SEM and were analysed by one-way ANOVA with LSD post hoc comparisons or Welch’s ANOVA with Dunnett’s T3 post hoc test, n = 4. NS, no statistical difference; *P < 0.05, **P < 0.01, ***P < 0.001 vs. the BI group. BI, balloon injury; EPC+BI, EPC transplantation after BI