even though the phorbol ester 12-o-tetradecanoylphorbol 13-acetate ( tpa ) is known to bind to and activate protein kinase c ( pkc ) , it is still not certain that all cellular responses to phorbol esters are necessarily mediated by pkc .
C0039654
12-o-tetradecanoylphorbol 13-acetate
C0031586
phorbol esters