addition of the tumor promoter phorbol ester 12-o-tetradecanoylphorbol-13-acetate ( tpa ) , at concentrations which activate pituitary protein c kinase , to cultured pituitary cells resulted in up-regulation of gnrh receptors ( 155 % at 4 h ) .
C0031586
phorbol ester
C0039654
12-o-tetradecanoylphorbol-13-acetate