purified platelet-derived growth factor ( pdgf ) , insulin-like growth factor ( igf-1 ) , transforming growth factor-beta ( tgf beta ) , and epidermal growth factor ( egf ) in combination with tgf beta did not stimulate 3h-thymidine incorporation in hs294t cells under the conditions used for mgsa bioassay .
C0037657
insulin-like growth factor
C0021665
igf-1