Role of endothelin 'ET IND.B' receptors in portal vasoconstriction induced by et-1 and irl 1620 - Stella, H J; Faro, F; Faro, R; Withrington, P G; Antunes, E; De Nucci, Gilberto (Reuniao Anual da Federacao de Sociedades de Biologia Experimental, 1996)