the phorbol ester 12-o-tetradecanoylphorbol 13-acetate ( tpa ) stimulated the phosphorylation of two distinct 27 kda and 28 kda proteins , respectively , in bovine vascular endothelial cells and in mcf-7 human breast cancer cells .
C0031586
phorbol ester
C0039654
12-o-tetradecanoylphorbol 13-acetate