in isolated bovine adrenal medullary cells , the phorbol ester 12-o-tetradecanoyl phorbol 13-acetate ( tpa ) , an activator of protein kinase c , stimulated [ 14c ] catecholamine synthesis from [ 14c ] tyrosine , but not from [ 14c ] dopa .
C0031586
phorbol ester
C0039654
12-o-tetradecanoyl