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VEGF PADS stimulate tube formation in HUVECs. a. HUVEC tube formation was assessed 6 h after seeding on growth factor reduced Matrigel and supplementing the media with 20 nM ELP, VEGF, or VEGFPADS. b. Average tubes per field were counted for six fields per sample. Data represent the mean ± se of four independent experiments. *p = 0.000003, one-way ANOVA with post-hoc Bonferroni multiple comparison.
