calcium ionophore a23187 was used to raise intracellular free calcium , the phorbol ester 12-o-tetradecanoyl phorbol-13-acetate ( tpa ) to activate protein kinase c , and forskolin to activate adenylate cyclase .
C0031586
phorbol ester
C0039654
12-o-tetradecanoyl phorbol-13-acetate