stimulation of 45ca2+ efflux from saponin-permeabilized ddt1 mf-2 cells was observed with the addition of either the alpha 1-adrenergic agonist phenylephrine and guanosine-5'-triphosphate or the nonhydrolyzable guanine nucleotide guanylyl-imidodiphosphate .
C0018353
guanosine
C0018366
guanylyl-imidodiphosphate