in the present study , treatment of unfertilized eggs with the phorbol ester 12-o-tetradecanoylphorbol 13-acetate stimulated tyrosine phosphorylation of the high molecular weight cortical protein to levels three- to fivefold higher than that occurring in response to fertilization .
C0031586
phorbol ester
C0039654
12-o-tetradecanoylphorbol 13-acetate