Progress in studies on mechanism of promoting blood circulation and removing blood stasis of 3,4-dihydroxyacetophenone Effects of Angelica sinensis total phthalide on promoting blood circulation and removing blood stasis Effects of Angelica sinensis total phthalide on promoting blood circulation and removing blood stasis Effect of Xuefuzhuyu Decoction OB pulmonary arterial smooth muscle cell proliferation and NO level in PASMC culture medium under hypoxia Effect of total flavone in Sanguis Draconis on platelet aggregation,thrombus formation and myocardial ischemia