in the presence of 12-o-tetradecanoylphorbol-13-acetate ( tpa ) or the non-tpa-type tumor promoter , palytoxin , recombinant human insulin growth factor-i ( igf-i ) and insulin synergistically stimulate prostaglandin production in rat liver cells ( the c-9 cell line ) .
C0795635
human insulin
C0021641
insulin