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Effect of AS-IV on HUVEC viability. (A) Effects of AS-IV on the viability of HUVECs in 5.55 mM glucose at 48 h. (B) Effects of AS-IV on the viability of HUVECs in 33.3 mM glucose at 48 h. Data of three experiments were presented as the mean ± standard deviation. *P<0.05 and **P<0.01 vs. the Control group (5.55 mM glucose concentration); ##P<0.01 vs. the Model group (33.3 mM glucose concentration). HUVECs, human umbilical vein endothelial cells; AS-IV, astragaloside IV.
