growth factors , including interleukin 3 ( il-3 ) , interleukin 1 alpha ( il-1 alpha ) , epidermal growth factor ( egf ) , fibroblast growth factor ( fgf ) , platelet-derived growth factor ( pdgf ) , macrophage colony-stimulating factor ( m-csf ) , granulocyte-macrophage colony-stimulating factor ( gm-csf ) , and buffalo rat liver cell-conditioned medium ( brl-cm ) were tested for stimulation of the proliferation of cfu-f in a standard culture in both 2 % and 15 % serum .
C0018284
growth
C0032200
platelet-derived