Analysis of the machanisms underlying the vasorelaxant action of kaurenoic and in the isolated rat aorta - Tirapelli, Carlos Renato; Ambrósio, Sérgio R.; Costa, Fernando Batista da; Coutinho, Sílvia B.; Oliveira, Dionéia Camilo Rodrigues de; Oliveira, Ana Maria de (European Journal of Pharmacology, 2004)