tumor promoting phorbol esters , such as 12-0-tetradecanoyl-phorbol-13-acetate ( tpa ) , stimulate colony formation in vitro by murine granulocyte-macrophage progenitors ( gm-cfc ) without added colony stimulating factors ( csf ) .
C0031586
phorbol esters
C0039654
tetradecanoyl-phorbol