Endothelium-Dependent Vasodilator Effect of Extract Prepared from the Roots of Paeonia lactiflora on Isolated Rat Aorta - Goto, Hirozo; Shimada, Yutaka; Akechi, Yoko; Kohta, Kazufumi; Hattori, Masao; Terasawa, Katsutoshi (Planta Medica, 1996)