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Contents of nitric oxide (NO) (A) and endothelin-1 (ET-1) (B) of HUVECs treated with TP6, TP7, and TP10 for 24 h, respectively. The cell group treated with captopril (Cap) was designed as the positive control. ***P < 0.001 vs. control; ###P < 0.001 and ##P < 0.01 vs. captopril; ΔΔΔP < 0.001 vs. norepinephrine (NE).
