tumour-promoting phorbol esters such as 12-o-tetradecanoylphorbol-13-acetate ( tpa ) , which activate ca2+-activated , phospholipid-dependent protein kinase ( protein kinase c ) , can also cause platelet aggregation and phosphorylation of a 20,000-mw peptide in blood platelets .
C0031586
phorbol esters
C0039654
12-o-tetradecanoylphorbol-13-acetate