Evaluation of the effect of DLC-VEGF on HUVECs tube formation. Branch nodes and branch length are quantified through ImageJ (n= 6). Scale bar, 250 µm. Scale bar, 50 µm. All data are provided as means ± SD. Comparisons between two groups were performed using two-tailed unpaired Student's t test, and statistical significance was indicated by the asterisks (*) above the lines. NS indicatesp> 0.1234. *p< 0.0332, and **p< 0.0021, and ****p< 0.0001.
