Roles of potassium channel in effects of resveratrol on isolated myocardial contractility and heart rate research in guinea pig Effect of Tetradrine on Electrophysilogic Changes Caused by Ri sing of Left Ventricular Preload in Guinea Pigs The Effects of PQS and Its Monomer Ginsenoside on Heart Inhibition of flavone fromGlycyrrhiza uralensis on capsaicin-induced cough reflex in guinea pig Anti-hypoxia and Anti-glucose Deficiency Effects of PQS on Guinea Pig PapillaryMuscle in Low Frequency Electrlcal Stimulation Action of Chinese Arborvitae Top Tender Leaves (Platycladus orientalis) on Smooth Muscle of Guinea Pig Trachea