In Vitro Inhibition of [3H]-Angiotensin II Binding on the Human AT1 Receptor by Proanthocyanidins from Guazuma ulmifolia Bark - Caballero-George, Catherina; Vanderheyden, Patrick M L; De Bruyne, Tess; Shahat, Abdel-Atty; Van den Heuvel, Hilde; Solis, Pablo N; Gupta, Mahabir P; Claeys, Magda; Pieters, Luc; Vauquelin, Georges; Vlietinck, Arnold J (Planta Medica, 2002)