growth factors [ insulin-like growth factors ( igf-i , igf-ii ) , transforming growth factor-beta ( tgf beta ) , epidermal growth factors ( egf ) ] , found in the ovary and known to alter granulosal function , were assessed for their ability to modulate porcine thecal steroidogenesis .
C0037657
insulin-like growth factors
C0021665
igf-i