In vitro inhibition of [3H]-angiotensin II binding on the human AT1 receptor by proanthocyanidins from Guazuma ulmifolia bark - Caballero-George, C; Vanderheyden, P M; De Bruyne, T; Shahat, A A; Van den Heuvel, H; Solis, P N; Gupta, M P; Claeys, M; Pieters, L; Vauquelin, G; Vlietinck, A J (Planta Med, 2002)