pretreatment of the cells with various doses of 12-o-tetradecanoylphorbol-13-acetate ( tpa ) , a potent protein kinase c-activating phorbol ester , inhibited the pge1-induced elevation of [ ca2+ ] i in a dose-dependent manner .
C0039654
12-o-tetradecanoylphorbol-13-acetate
C0031586
phorbol ester