Astragalus polysaccharide ameliorates H2O2-induced human umbilical vein endothelial cell injuryRONGHUI HAN1, FUTIAN TANG1, MEILI LU1, CHONGHUA XU1, JIN HU1, MENG MEI1 and HONGXIN WANG2 1Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Province, Drug Research Institute; 2Department of Pharmacology, Key Laboratory of Cardiovascular and Cerebrovascular Drug Research of Liaoning Drug Research Institute, Jinzhou Medical University, Jinzhou, Liaoning 121001, P.R. China