Protection of laminaria polysaccharide on vasodilation function of rats induced by psychological stress Protection of laminaria polysaccharide on vasodilation function of rats induced by psychological stress Vasodilation effect of EUL on rat thoracic artery Vasorelaxation effects of homoisoflavonoids from Caesalpinia sappan in  rat thoracic aortic rings Effect and mechanisms of Shenmai injection on contractions of porcine coronary artery Vasodilation of procyanid ins from grape seeds on isolated rabbit aorta