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DEP exposure induces capillary tube formation in endothelial cells. A) indicates the analysis of capillary tube length, B) shows the analysis of capillary tube number, and C) depicts representative images of cultured HUVECs exposed to DEP for 24 hours. Original magnification ×100. *p<0.05 vs. 0 μg/ml; **p<0.001 vs. 0 μg/ml (control); +p<0.05 vs. 5 μg/ml; #p<0.001 vs. 5 μg/ml; $p<0.001 vs. 15 μg/ml at the same time point.
