the enhancement of ca2+-dependent secretion from permeabilized chromaffin cells induced by the phorbol ester 12-o-tetradecanoylphorbol-13-acetate ( tpa ) was inhibited by trypsin added simultaneously with ca2+ to permeabilized cells at concentrations ( 3-10 micrograms/ml ) which had little or no effect on ca2+-dependent secretion from cells untreated with tpa .
C0031586
phorbol ester
C0039654
12-o-tetradecanoylphorbol-13-acetate