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(A) Activity of HRP-3, HDGF and VEGF to stimulate HUVEC growth at different times. (B) Dose-dependent activity of HRP-3 to induce HUVEC growth at 48 h. (C) Dose-dependent activity of HDGF to facilitate HUVEC growth at 48 h. Data are mean ± s.e.m. in one representative experiment. n = 4 (4 wells/group). These results were validated three times with similar outcomes. *P<0.05, **P<0.01, ***P<0.001, vs. control.
